Mark Scheer McGowan, MD
Internal Medicine Physician · Santa Monica, CA
Mark Scheer McGowan, MD is an internal medicine physician with a practice address in Santa Monica, California, and NPI 1720015902, issued on Jun 26, 2006. Check the license (California G39850, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Scheer McGowan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G39850 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1260 15TH St, Santa Monica, CA 90404
- Phone
- (310) 656-1700
- Enumerated
- Jun 26, 2006
- Record last updated
- Feb 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (310) 458-1061
- Medicare enrollment
- Enrolled (PECOS I20110315000223); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1973
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1260 15TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Scheer McGowan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G39850Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average internal medicine physician in 2024
5,645 Medicare Part D claims for 595 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 261 claims were for opioids.
Most prescribed
- Amlodipine Besylate441 claims
- Atorvastatin Calcium373 claims
- Levothyroxine Sodium190 claims
- Albuterol Sulfate Hfa163 claims
- Gabapentin148 claims
- Lisinopril148 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.
Mark Scheer McGowan among 17,696 internal medicine physician records in California
Mark Scheer McGowan, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1973 · median 2004 among the 11,065 with a school on file
- Record last updated2020 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
168 internal medicine physician records list a practice address in Santa Monica
They are 168 of the 5,151 NPPES records with a practice address in Santa Monica, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Santa Monica → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Ashley, MDSanta Monica, CA 904041780628487
- Mitchell Becker, M.D.Santa Monica, CA 904041922033935
- Chiquita Flowers, M.D.Santa Monica, CA 904041972595700
- Glenn Gorlitsky, M.D.Santa Monica, CA 904041881625143
- Oscar Hernandez, M.D.Santa Monica, CA 904041699706952
- Alex Messina, MDSanta Monica, CA 904041902867823
- Mark Nachman, MDSanta Monica, CA 904041104803683
- Neal Shanblatt, M.D.Santa Monica, CA 904041922092410
Common questions
What is Mark Scheer McGowan, MD's NPI number?
Mark Scheer McGowan, MD's National Provider Identifier (NPI) is 1720015902, issued on Jun 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Scheer McGowan, MD located?
The NPPES record lists a practice address at 1260 15TH St, Santa Monica, CA, 90404. Phone: (310) 656-1700. Providers update this record themselves, so call before visiting.
How can I verify Mark Scheer McGowan, MD's license?
NPPES lists California license number G39850, 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 Mark Scheer McGowan, MD prescribe under Medicare Part D?
In 2024, Mark Scheer McGowan, MD had 5,645 Medicare Part D claims for 595 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.