NPPES file of Aug 9, 2026

Nikolaj Wolfson, M.D.

Orthopaedic Trauma Physician · San Francisco, CA

Nikolaj Wolfson, M.D. is an orthopaedic trauma physician with a practice address in San Francisco, California, and NPI 1144270612, issued on May 12, 2006. Check the license (California C51436, 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
1144270612
Name
Nikolaj Wolfson
Credential
M.D.
Primary taxonomy
Orthopaedic Trauma Physician 207XX0801X
License numbers
C51436 CA
21346 WV
Self-reported in NPPES; status is on the state search
Practice location
2300 Sutter St, San Francisco, CA 94115
Phone
(415) 221-4400
Enumerated
May 12, 2006
Record last updated
Sep 4, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(415) 798-2213
Medicare enrollment
Enrolled (PECOS I20090325000757); 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 2300 Sutter St

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

  1. Thomas Ellerhorst, D.D.S.General Practice Dentistry1174620033
  2. Jacob Lalezari, M.D.Internal Medicine Physician1124173554
  3. Marjorie Smith, M.D.Internal Medicine Physician1386734747

Verify Nikolaj Wolfson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C51436
    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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90% fewer Medicare Part D claims than the average orthopaedic trauma physician in 2024

15 Medicare Part D claims, against an average of 151 among the 627 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Nikolaj Wolfson15
  2. Specialty average151

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: $50.58

2 payments; by number, the most common kind was food and beverage; the largest payer was Pacira Pharmaceuticals Incorporated. The 722 providers of this specialty with any payment received $15,814.30 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nikolaj Wolfson$51
  2. Specialty average$15,814

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

  1. Chinese Hospital AssociationSan Francisco, CA

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

Nikolaj Wolfson among 114 orthopaedic trauma physician records in California

Nikolaj Wolfson, M.D. is one of 114 orthopaedic trauma physician records with a practice address in California. 89% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 72% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 83% of these records are
  • Graduated1984 · median 2009 among the 95 with a school on file
  • Record last updated2020 · 41% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207XX0801X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Orthopaedic Trauma Physician providers in California

There are 114 orthopaedic trauma physician records in California.

The 8 orthopaedic trauma physician records with the nearest ZIP codes

  1. David Lowenberg, MDSan Francisco, CA 941151992746150
  2. Erin Donohoe, MB BCH BAOSan Francisco, CA 941101346724317
  3. Zachary Lim, MB, BCH, BAOSan Francisco, CA 941101275147233
  4. Jacob Matz, MDSan Francisco, CA 941101740835131
  5. David Shearer, MDSan Francisco, CA 941101073849345
  6. Paul Toogood, M.D.San Francisco, CA 941101033444120
  7. Julius Bishop, MDStanford, CA 943051548381999
  8. Michael Gardner, MDStanford, CA 943051710101555

Common questions

What is Nikolaj Wolfson, M.D.'s NPI number?

Nikolaj Wolfson, M.D.'s National Provider Identifier (NPI) is 1144270612, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nikolaj Wolfson, M.D. located?

The NPPES record lists a practice address at 2300 Sutter St, San Francisco, CA, 94115. Phone: (415) 221-4400. Providers update this record themselves, so call before visiting.

How can I verify Nikolaj Wolfson, M.D.'s license?

NPPES lists California license number C51436, 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 Nikolaj Wolfson, M.D. prescribe under Medicare Part D?

In 2024, Nikolaj Wolfson, M.D. had 15 Medicare Part D claims; the average among orthopaedic trauma physician prescribers was 151. 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.