James Heckmann, MD
Hematology & Oncology Physician · Mountain View, CA
James Heckmann, MD is a hematology & oncology physician with a practice address in Mountain View, California, and NPI 1487660023, issued on Aug 1, 2006. Check the license (California G29205, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- James Heckmann
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G29205 CA
Self-reported in NPPES; status is on the state search - Practice location
- 701 E EL Camino Real, Mountain View, CA 94040
- Phone
- (650) 934-7600
- Enumerated
- Aug 1, 2006
- Record last updated
- Dec 1, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20060301000820); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 1973
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 701 E EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aya Abou-Nasr, MDAnesthesiology Physician1982191672
- Jaimie Abraham, AGPCNP-BCFamily Nurse Practitioner1245757699
- Brooke Abrantes, PA-CSurgical Physician Assistant1316771298
- Faud Abuabara, M.D.MOHS-Micrographic Surgery Physician1164472890
- Felix Adler, M.D.Diagnostic Radiology Physician1801069729
- Olga Afanasiev, MD, PHDDermatology Physician1669869384
Verify James Heckmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G29205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
61 Medicare Part D claims for 12 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Jakafi17 claims
- Hydroxyurea14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $52.92
2 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationSunnyvale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Heckmann among 1,583 hematology & oncology physician records in California
James Heckmann, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1973 · median 2003 among the 1,124 with a school on file
- Record last updated2011 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Mountain View → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Arun Kumar Arumugam Raajasekar, MDMountain View, CA 940401801143722
- Jiali Li, M.D., PH.DMountain View, CA 940401396981445
- Derrick Wong, M.D.Mountain View, CA 940401194941104
- Hanhsing Wu, MDMountain View, CA 940401114034832
- Juliet Kral, MDMenlo Park, CA 940251225046188
- Gail Brown, M.D.Woodside, CA 940621750402996
- Sandra Canales, MDRedwood City, CA 940631831277474
- Linda Hoang, M.D.Redwood City, CA 940631811253214
Common questions
What is James Heckmann, MD's NPI number?
James Heckmann, MD's National Provider Identifier (NPI) is 1487660023, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Heckmann, MD located?
The NPPES record lists a practice address at 701 E EL Camino Real, Mountain View, CA, 94040. Phone: (650) 934-7600. Providers update this record themselves, so call before visiting.
How can I verify James Heckmann, MD's license?
NPPES lists California license number G29205, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does James Heckmann, MD prescribe under Medicare Part D?
In 2024, James Heckmann, MD had 61 Medicare Part D claims for 12 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.