Sleep Medicine Doctors (Internal Medicine) in California
Data updated monthly · Last refresh October 2026
132 Sleep Medicine (Internal Medicine) providers practice in California, including 83 (63%) offering telehealth. The largest concentration is in San Diego. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
132providers
83telehealth
San Diegotop city
Sleep Medicine (Internal Medicine) by city in California
Choose a city to see providers there.
Where Sleep Medicine Doctors (Internal Medicine) in California practice
From CMS Medicare enrollment records covering 106 of the 132 providers listed here (80%). Providers who do not bill Medicare are not included in these figures.
36%solo or small practice (under 10 clinicians)
8%mid-size group (10 to 99)
56%large group or health system (100+)
Largest practice groups
| Group (as registered with Medicare) | Sleep Medicine Doctors (Internal Medicine) | All clinicians in group | Main city |
| Sutter Bay Medical Foundation | 8 | 3,783 | Los Altos |
| Stanford Health Care | 6 | 3,152 | Stanford |
| Regents of the University of California | 6 | 2,047 | San Diego |
| The Regents of the University of California | 6 | 1,426 | Los Angeles |
| Southern California Permanente Medical Group | 4 | 11,250 | San Diego |
Hospitals where they hold privileges
| Hospital | City | Ownership | CMS star rating | Sleep Medicine Doctors (Internal Medicine) affiliated |
| Ronald Reagan UCLA Medical Center | Los Angeles | Government | 4 of 5 | 7 |
| Stanford Health Care | Stanford | Nonprofit | 5 of 5 | 7 |
| Community Regional Medical Center | Fresno | Nonprofit | 1 of 5 | 5 |
| UC San Diego Health Hillcrest - Hillcrest Med Ctr | San Diego | Nonprofit | 5 of 5 | 4 |
| Cedars-Sinai Medical Center | Los Angeles | Nonprofit | 5 of 5 | 4 |
Sources: CMS Doctors and Clinicians (August 2026) and Facility Affiliation files (August 2026); hospital ownership type and overall star rating from CMS Hospital General Information (July 2026). A clinician in several groups is counted once, in the largest group they bill through. Ownership type is what the hospital reports to CMS; it does not show private equity or other investor ownership. How we build this directory.
Sleep Medicine (Internal Medicine) providers in California
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Robert Lebby, MDAliso Viejo, CA · $286 in drug and device payments (2025) ·
(949) 446-8990 Dr. Ahana Sandhu, M.D.Bakersfield, CA · $833 in drug and device payments (2025) · Telehealth ·
(661) 695-6777 Dr. Ruchi Bansal, M.D.Bakersfield, CA · $472 in drug and device payments (2025) ·
(661) 695-6777 Dr. Dan Naim, M.D.Beverly Hills, CA · $2,473 in drug and device payments (2025) · Telehealth ·
(310) 402-2498 Dr. Babak Hakimisefat, D.O.Burbank, CA · $228 in drug and device payments (2025) ·
(818) 842-4819 Dr. Deepti Sinha, M.D., FRACPBurlingame, CA · $49 in drug and device payments (2025) · Telehealth ·
(650) 779-4055 Dr. Mehran Farid-moayer, M.D.Burlingame, CA · $23 in drug and device payments (2025) · Telehealth ·
(650) 779-4055 Dr. William Hart, M.D.Capitola, CA · $221 in drug and device payments (2025) · Telehealth ·
(831) 460-7300 Dr. Sandeep Goplani, MDCarmichael, CA · No drug or device payments recorded (2025) · Telehealth ·
(916) 536-3670 Dr. Mark Chung, MDCerritos, CA · $1,158 in drug and device payments (2025) ·
(562) 991-5679 Dr. John Lin, DOConcord, CA · $826 in drug and device payments (2025) ·
(925) 310-8978 Dr. Parham Gharagozlou, M.D.Concord, CA · $1,515 in drug and device payments (2025) · Telehealth ·
(925) 849-6634 Dr. Puja Thakkar, D.O.Danville, CA · $6,297 in drug and device payments (2025) · Telehealth ·
(925) 820-4472 Dr. Aditya Bhargava, M.D.Dublin, CA · $382 in drug and device payments (2025) · Telehealth ·
(510) 419-8268 Dr. Mostafa Shalaby, M.DDublin, CA · $48 in drug and device payments (2025) · Telehealth ·
(925) 875-6229 Dr. Fahima NadiEl Cajon, CA · $1,670 in drug and device payments (2025) · Telehealth ·
(760) 810-0904 Dr. Keren Fogelfeld, M.D.Encino, CA · $4,947 in drug and device payments (2025) · Telehealth ·
(818) 366-2977 Dr. Susie Fong, M.D.Encino, CA · $795 in drug and device payments (2025) · Telehealth ·
(818) 461-8148 Dr. Joseph Kim, M.D.Fontana, CA · No drug or device payments recorded (2025) ·
(909) 427-4432 Dr. Yema JalalFremont, CA · $1,462 in drug and device payments (2025) · Telehealth ·
(925) 685-4224 Dr. Kathreen Al RamoFresno, CA · No drug or device payments recorded (2025) ·
(559) 435-4700 Dr. Kyle Almodovar, D.O.Fresno, CA · No drug or device payments recorded (2025) ·
(559) 435-4700 Dr. Lynn Keenan, M.D.Fresno, CA · No drug or device payments recorded (2025) ·
(559) 435-4700 Dr. Mandip Kang, MDFresno, CA · No drug or device payments recorded (2025) ·
(559) 435-4700 Dr. Paymon Ebrahimzadeh, D.O.Fresno, CA · $22 in drug and device payments (2025) · Telehealth ·
(559) 435-4700 Dr. Sheryll Mae Soriano, MDFresno, CA · No drug or device payments recorded (2025) · Telehealth ·
(559) 435-4700 Dr. Sahil Chopra, MDIrvine, CA · $230 in drug and device payments (2025) · Telehealth ·
(213) 375-4070 Dr. Wesley Fleming, MDIrvine, CA · $125 in drug and device payments (2025) · Telehealth ·
(949) 679-5510 Dr. Nancy Hsu, MDLa Jolla, CA · $2,430 in drug and device payments (2025) · Telehealth ·
(858) 554-8860 Dr. Alfredo Colon-marreroLoma Linda, CA · No drug or device payments recorded (2025) ·
(909) 558-6472 Dr. Stephen Brown, M.D.Long Beach, CA · No drug or device payments recorded (2025) ·
(562) 422-1110 Dr. Valerie Cacho, MDLos Alamitos, CA · $603 in drug and device payments (2025) · Telehealth ·
(657) 553-3799 Dr. Alfonso Padilla, MDLos Angeles, CA · $47 in drug and device payments (2025) · Telehealth ·
(310) 794-1276 Dr. Christine Mcelyea, DOLos Angeles, CA · $14 in drug and device payments (2025) · Telehealth ·
(323) 442-5100 Dr. Cyrus Haghighian, MDLos Angeles, CA · $2,018 in drug and device payments (2025) · Telehealth ·
(323) 442-5100 Dr. Daniel Norman, M.D.Los Angeles, CA · $2,063 in drug and device payments (2025) · Telehealth ·
(310) 968-6339 Dr. Deandra KuruppuLos Angeles, CA · No drug or device payments recorded (2025) ·
(310) 895-3307 Dr. John Lee, MDLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(213) 908-7707 Dr. Joyce Adesina, M.D.Los Angeles, CA · $152 in drug and device payments (2025) · Telehealth ·
(323) 442-5100 Dr. Ngocthuy Tran, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 226-7556 Dr. Payam Shadi, M.D.Los Angeles, CA · $1,407 in drug and device payments (2025) · Telehealth ·
(323) 938-9999 Dr. Rijesh Niraula, DOLos Angeles, CA · No drug or device payments recorded (2025) · Telehealth ·
(323) 442-5100 Dr. Khalid Rauf, M DMadera, CA · $1,300 in drug and device payments (2025) · Telehealth ·
(559) 673-9021 Dr. Steven RussoMartinez, CA · $150 in drug and device payments (2025) ·
(925) 313-4931 Dr. George Schiffman, M.D.Mission Viejo, CA · $608 in drug and device payments (2025) ·
(949) 364-3330 Dr. Kiritkumar Patel, M.D. Common questions
How many Sleep Medicine (Internal Medicine) providers are in California?There are 132 Sleep Medicine (Internal Medicine) providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Sleep Medicine (Internal Medicine) providers in California offer telehealth?Yes. 83 of the 132 Sleep Medicine (Internal Medicine) providers in California (about 63%) report offering telehealth services in CMS data.
Which cities in California have the most Sleep Medicine (Internal Medicine) providers?San Diego (14), Los Angeles (10), Fresno (8) have the highest concentration of Sleep Medicine (Internal Medicine) providers in California.
How many Sleep Medicine (Internal Medicine) providers in California received drug or device company payments?91 of 132 Sleep Medicine (Internal Medicine) providers in California (69%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Sleep Medicine Doctors (Internal Medicine) in California work in independent practices or large health systems?Among 106 Sleep Medicine Doctors (Internal Medicine) in California enrolled in Medicare, 36% bill through a solo or small practice with fewer than 10 clinicians, 8% through a mid-size group of 10 to 99, and 56% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Sleep Medicine Doctors (Internal Medicine) in California work at?According to CMS facility affiliation records, the California hospitals where the most Sleep Medicine Doctors (Internal Medicine) hold privileges are Ronald Reagan UCLA Medical Center in Los Angeles; Stanford Health Care in Stanford; Community Regional Medical Center in Fresno.
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