Hematologists (Internal Medicine) in California
Data updated monthly · Last refresh October 2026
179 Hematology (Internal Medicine) providers practice in California, including 105 (59%) offering telehealth. The largest concentration is in Duarte. 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.
179providers
105telehealth
Duartetop city
Hematology (Internal Medicine) by city in California
Choose a city to see providers there.
Hematology (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. Samer Khaled, M.D.Duarte, CA · $9,250 in drug and device payments (2025) ·
(800) 826-4673 Dr. Sarah Lee, M.D.Duarte, CA · $1,602 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Scott Goldsmith, MDDuarte, CA · $14,138 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Scott James, MD, PHDDuarte, CA · No drug or device payments recorded (2025) ·
(626) 256-4673 Dr. Stephen Forman, MDDuarte, CA · $63 in drug and device payments (2025) · Telehealth ·
(626) 359-8111 Dr. Steven Rosen, M.D.Duarte, CA · $857 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Sunmin Park, M.D.Duarte, CA · $243 in drug and device payments (2025) · Telehealth ·
(800) 826-4673 Dr. Swetha Thiruvengadam, M.D.Duarte, CA · $8,187 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Tanya Siddiqi, M.D.Duarte, CA · $4,859 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Tycel Phillips, M.D.Duarte, CA · $52,132 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Victor Orellana-noia, MDDuarte, CA · $99 in drug and device payments (2025) · Telehealth ·
(800) 826-4673 Dr. Vikramjit Dhillon, D.O. Dr. Vincent Chung, MDDuarte, CA · $47 in drug and device payments (2025) · Telehealth ·
(626) 256-4673 Dr. Vinod Pullarkat, M.D.Duarte, CA · $91,701 in drug and device payments (2025) ·
(626) 256-4673 Dr. Jeffery Krakower, MDEl Dorado Hills, CA · No drug or device payments recorded (2025) ·
(650) 248-1159 Dr. Stephen Embury, M.D.Half Moon Bay, CA · No drug or device payments recorded (2025) ·
(415) 203-0436 Dr. Azra Borogovac, M.D.Irvine, CA · $11,968 in drug and device payments (2025) · Telehealth ·
(949) 671-4673 Dr. Benjamin Heyman, M.D.Irvine, CA · $7,379 in drug and device payments (2025) · Telehealth ·
(949) 671-4673 Dr. Julio Alvarenga Thiebaud, M.D.Irvine, CA · $23,807 in drug and device payments (2025) · Telehealth ·
(949) 671-8000 Dr. Krisstina Gowin, D.O.Irvine, CA · No drug or device payments recorded (2025) · Telehealth ·
(888) 333-4673 Dr. Tamer Othman, M.D.Irvine, CA · $228 in drug and device payments (2025) · Telehealth ·
(800) 826-4673 Dr. Tammarah SklarzLa Jolla, CA · $53 in drug and device payments (2025) · Telehealth ·
(800) 926-8273 Dr. William Buchholz, MDLos Altos, CA · No drug or device payments recorded (2025) ·
(650) 980-1982 Dr. Anil Tulpule, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(323) 865-3000 Dr. Caitlin O'neillLos Angeles, CA · $673 in drug and device payments (2025) · Telehealth ·
(323) 865-3105 Dr. Caroline Piatek, M.D,Los Angeles, CA · $75,983 in drug and device payments (2025) · Telehealth ·
(323) 865-3105 Dr. Donald Feinstein, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(626) 457-5839 Dr. Doris Quon, M.D.Los Angeles, CA · $252,825 in drug and device payments (2025) · Telehealth ·
(213) 742-1000 Dr. Erwin GrussieLos Angeles, CA · $467 in drug and device payments (2025) · Telehealth ·
(310) 231-2121 Dr. Giridharan Ramsingh, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(323) 865-3913 Dr. Hitomi Hosoya, MDLos Angeles, CA · $308 in drug and device payments (2025) ·
(310) 423-1160 Dr. Ilene Weitz, M.D.Los Angeles, CA · $42,349 in drug and device payments (2025) ·
(323) 865-3105 Dr. Nneka Nwachukwu, MDLos Angeles, CA · $163 in drug and device payments (2025) · Telehealth ·
(323) 865-3913 Dr. Parkash Gill, M.D.Los Angeles, CA · No drug or device payments recorded (2025) ·
(626) 457-5839 Dr. Robert Chen, MDLos Angeles, CA · $18 in drug and device payments (2025) ·
(303) 913-4146 Dr. Susan Claster, MDLos Angeles, CA · No drug or device payments recorded (2025) ·
(424) 338-2801 Dr. Zaw Myint, M.D.Los Angeles, CA · $116 in drug and device payments (2025) · Telehealth ·
(323) 865-3105 Dr. Eduardo Fernandez Hernandez, MDNewport Beach, CA · $576 in drug and device payments (2025) ·
(949) 764-4060 Dr. Stanley Drew, M.D.Northridge, CA · No drug or device payments recorded (2025) ·
(818) 654-3400 Dr. Daniel CoreyOakland, CA · $85 in drug and device payments (2025) · Telehealth ·
(510) 522-3700 Dr. Mervyn Sahud, M.D.Oakland, CA · No drug or device payments recorded (2025) ·
(510) 830-3100 Dr. Richard Vanetten, MDOrange, CA · No drug or device payments recorded (2025) · Telehealth ·
(714) 456-5153 Dr. Zahra Pakbaz, MDOrange, CA · $55,020 in drug and device payments (2025) · Telehealth ·
(714) 456-8000 Dr. Asiri Ediriwickrema, MDPalo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Bita Fakhri, M.D., M.P.HPalo Alto, CA · $21,686 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Jason Gotlib, M.D., M.S.Palo Alto, CA · $19,362 in drug and device payments (2025) · Telehealth ·
(650) 736-1253 Dr. Robert Diep, M.D.Palo Alto, CA · $2,225 in drug and device payments (2025) · Telehealth ·
(650) 723-4000 Dr. Tamara Dunn, M.D.Palo Alto, CA · No drug or device payments recorded (2025) · Telehealth ·
(650) 723-4000 Dr. Anya Parekh, MD, MPHSacramento, CA · $184 in drug and device payments (2025) ·
(916) 734-3772 Common questions
How many Hematology (Internal Medicine) providers are in California?There are 179 Hematology (Internal Medicine) providers with active NPI records practicing in California, according to federal NPPES data refreshed monthly.
Do Hematology (Internal Medicine) providers in California offer telehealth?Yes. 105 of the 179 Hematology (Internal Medicine) providers in California (about 59%) report offering telehealth services in CMS data.
Which cities in California have the most Hematology (Internal Medicine) providers?Duarte (62), Stanford (44), San Francisco (17) have the highest concentration of Hematology (Internal Medicine) providers in California.
How many Hematology (Internal Medicine) providers in California received drug or device company payments?106 of 179 Hematology (Internal Medicine) providers in California (59%) 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 Hematologists (Internal Medicine) in California work in independent practices or large health systems?Among 131 Hematologists (Internal Medicine) in California enrolled in Medicare, 7% bill through a solo or small practice with fewer than 10 clinicians, 0% through a mid-size group of 10 to 99, and 93% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Hematologists (Internal Medicine) in California work at?According to CMS facility affiliation records, the California hospitals where the most Hematologists (Internal Medicine) hold privileges are Stanford Health Care in Stanford; Stanford Health Care Tri-Valley in Pleasanton; UCSF Medical Center in San Francisco.
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