Gregory A. Groetsema, MD
Emergency Medicine Physician · San Jose, CA
Gregory A. Groetsema, MD is an emergency medicine physician with a practice address in San Jose, California, and NPI 1790727873, issued on Jun 12, 2006. Check the license (California A71705, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory A. Groetsema
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A71705 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2105 Forest Ave, San Jose, CA 95128
- Phone
- (408) 947-2500
- Enumerated
- Jun 12, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (818) 587-2493
- Medicaid ID
- 00A717050 CA
- Medicare enrollment
- Enrolled (PECOS I20111209000352); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 2105 Forest Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ailya BatoolStudent in an Organized Health Care Education/Training Program1457702128
- Bryan Beall, DOEmergency Medicine Physician1861870875
- Gail Bellman, M.D.Radiation Oncology Physician1417070723
- Meenesh Bhimani, MDEmergency Medicine Physician1598712069
- Constance Bowie, MDRadiation Oncology Physician1699831420
Verify Gregory A. Groetsema in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71705Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% more Medicare Part D claims than the average emergency medicine physician in 2024
390 Medicare Part D claims for 294 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 32 claims were for opioids.
Most prescribed
- Cephalexin71 claims
- Ibuprofen41 claims
- Nitrofurantoin Mono-Macro22 claims
- Ondansetron Odt20 claims
- Hydrocodone-Acetaminophen19 claims
- Meclizine Hcl14 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.
Bills Medicare through 2 group practices
- County OF Santa ClaraSan Jose, CA
- Emergency Physicians Associates San Jose PCSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory A. Groetsema among 7,751 emergency medicine physician records in California
Gregory A. Groetsema, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Jose → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Meenesh Bhimani, MDSan Jose, CA 951281598712069
- Jan Bravo, MDSan Jose, CA 951281083651657
- Michael Chin, MDSan Jose, CA 951281700824042
- Howard Davis, MDSan Jose, CA 951281164464319
- Joan Gates, M.D.San Jose, CA 951281245213727
- Steve Germany, DOSan Jose, CA 951281326076241
- Benjamin Hafkenschiel, MDSan Jose, CA 951281710940457
- Philip Hurst, MDSan Jose, CA 951281992761365
Common questions
What is Gregory A. Groetsema, MD's NPI number?
Gregory A. Groetsema, MD's National Provider Identifier (NPI) is 1790727873, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory A. Groetsema, MD located?
The NPPES record lists a practice address at 2105 Forest Ave, San Jose, CA, 95128. Phone: (408) 947-2500. Providers update this record themselves, so call before visiting.
How can I verify Gregory A. Groetsema, MD's license?
NPPES lists California license number A71705, 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 Gregory A. Groetsema, MD prescribe under Medicare Part D?
In 2024, Gregory A. Groetsema, MD had 390 Medicare Part D claims for 294 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.