NPPES file of Aug 9, 2026

Glenn Diekmann, M.D.

Orthopaedic Surgery Physician · San Francisco, CA

Glenn Diekmann, M.D. is an orthopaedic surgery physician with a practice address in San Francisco, California, and NPI 1467584326, issued on Mar 9, 2007. Check the license (California A95215, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1467584326
Name
Glenn Diekmann
Credential
M.D.
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
A95215 CA
Self-reported in NPPES; status is on the state search
Practice location
500 Parnassus Ave, San Francisco, CA 94143
Phone
(415) 476-8939
Enumerated
Mar 9, 2007
Record last updated
Dec 2, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20090925000600); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 500 Parnassus Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kwabena Adu-KwartengStudent in an Organized Health Care Education/Training Program1801697784
  2. Annette Albright, M.D.Psychiatry Physician1750430625
  3. Abdullah Alshammari, MD, FRCSCOrthopaedic Surgery of the Spine Physician1437982477
  4. Gulsedef Arslan, DOStudent in an Organized Health Care Education/Training Program1891358297
  5. Peter Barish, M.D.Internal Medicine Physician1366861379
  6. Jeffrey Barry, MDOrthopaedic Surgery Physician1598031304

Verify Glenn Diekmann in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A95215
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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74% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024

91 Medicare Part D claims for 49 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 44 claims were for opioids.

  1. Glenn Diekmann91
  2. Specialty average346

Most prescribed

  1. Hydrocodone-Acetaminophen26 claims
  2. Meloxicam15 claims
  3. Tramadol Hcl12 claims
  4. Alendronate 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.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupBaldwin Park, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Glenn Diekmann among 2,276 orthopaedic surgery physician records in California

Glenn Diekmann, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 54% of them.

  • NPI issued2007 · 54% of these records are older, 35% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2004 · median 2003 among the 1,347 with a school on file
  • Record last updated2021 · 66% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Surgery Physician providers in California

There are 2,276 orthopaedic surgery physician records in California.

The 8 orthopaedic surgery physician records with the nearest ZIP codes

  1. Sigurd Berven, MDSan Francisco, CA 941431336193812
  2. David Bradford, MDSan Francisco, CA 941431003853193
  3. Alexis Dang, MDSan Francisco, CA 941431720119852
  4. Eliana Delgado, MDSan Francisco, CA 941431801963020
  5. Sibel Deviren, MDSan Francisco, CA 941431760435655
  6. Vedat Deviren, MDSan Francisco, CA 941431730230459
  7. Mohammad Diab, MDSan Francisco, CA 941431841243755
  8. Harry Jergesen, MDSan Francisco, CA 941431992759450

Common questions

What is Glenn Diekmann, M.D.'s NPI number?

Glenn Diekmann, M.D.'s National Provider Identifier (NPI) is 1467584326, issued on Mar 9, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Glenn Diekmann, M.D. located?

The NPPES record lists a practice address at 500 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 476-8939. Providers update this record themselves, so call before visiting.

How can I verify Glenn Diekmann, M.D.'s license?

NPPES lists California license number A95215, 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 Glenn Diekmann, M.D. prescribe under Medicare Part D?

In 2024, Glenn Diekmann, M.D. had 91 Medicare Part D claims for 49 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.