Pam Grewall, M.D.
Hospitalist Physician · San Francisco, CA
Pam Grewall, M.D. is a hospitalist physician with a practice address in San Francisco, California, and NPI 1578580445, issued on Jul 16, 2006. Check the license (California A78443, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Pam Grewall
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A78443 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2340 Clay St, San Francisco, CA 94115
- Phone
- (415) 600-3458
- Enumerated
- Jul 16, 2006
- Record last updated
- May 7, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (415) 600-3451
- Medicaid ID
- 00A784430 CA
- Medicare enrollment
- Enrolled (PECOS I20050425000888); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2000
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 2340 Clay St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Janet Bellingham, MDTransplant Surgery Physician1508062431
- Marissa Benge, FNPFamily Nurse Practitioner1225483860
Verify Pam Grewall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A78443Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average hospitalist physician in 2024
118 Medicare Part D claims for 50 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium11 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: $103.63
4 payments; by number, the most common kind was food and beverage; the largest payer was Kestra Medical Technology Services, Inc. The 7,324 providers of this specialty with any payment received $494.84 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
- County OF Santa ClaraSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Pam Grewall among 3,099 hospitalist physician records in California
Pam Grewall, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2000 · median 2010 among the 2,505 with a school on file
- Record last updated2019 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in San Francisco → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jonathan Alexander, MDSan Francisco, CA 941151811075450
- Elizabeth Andrews, MDSan Francisco, CA 941151023196631
- Deborah Chiarucci, MDSan Francisco, CA 941151043398647
- Joel Cho, MDSan Francisco, CA 941151568541696
- Reynaldo Cordero, MDSan Francisco, CA 941151538247192
- Brian Hoberman, MDSan Francisco, CA 941151952489551
- Jinwoo Kim, MDSan Francisco, CA 941151336227974
- Guy Lubliner, M.D.San Francisco, CA 941151013935089
Common questions
What is Pam Grewall, M.D.'s NPI number?
Pam Grewall, M.D.'s National Provider Identifier (NPI) is 1578580445, issued on Jul 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Pam Grewall, M.D. located?
The NPPES record lists a practice address at 2340 Clay St, San Francisco, CA, 94115. Phone: (415) 600-3458. Providers update this record themselves, so call before visiting.
How can I verify Pam Grewall, M.D.'s license?
NPPES lists California license number A78443, 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 Pam Grewall, M.D. prescribe under Medicare Part D?
In 2024, Pam Grewall, M.D. had 118 Medicare Part D claims for 50 beneficiaries; the average among hospitalist physician prescribers was 521. 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.