NPPES file of Aug 9, 2026

Elizabeth M. Watson, MD

Orthopaedic Surgery Physician · South San Francisco, CA

Elizabeth M. Watson, MD is an orthopaedic surgery physician with a practice address in South San Francisco, California, and NPI 1467530071, issued on Nov 1, 2006. Check the license (California G83419, 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
1467530071
Name
Elizabeth M. Watson
Credential
MD
Primary taxonomy
Orthopaedic Surgery Physician 207X00000X
License number
G83419 CA
Self-reported in NPPES; status is on the state search
Practice location
1200 EL Camino Real, South San Francisco, CA 94080
Phone
(650) 742-2000
Enumerated
Nov 1, 2006
Record last updated
Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
00G834190 CA
Medicare enrollment
Enrolled (PECOS I20110113000347); accepts Medicare assignment
Medical or professional school
Harvard Medical School, 1992
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 1200 EL Camino Real

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

  1. Leslie Adams, PHARMDPharmacist1902338486
  2. Kristine Aguirre, RRTRegistered Respiratory Therapist1528539996
  3. Lena AlazzehPhysical Therapist1629739859
  4. Kate AlbeePhysical Therapist1053464495
  5. Jason Anderson, MDHospitalist Physician1831277466
  6. Karl Anderson, MDUrology Physician1700964301

Verify Elizabeth M. Watson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G83419
    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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34% more Medicare Part D claims than the average orthopaedic surgery physician in 2024

465 Medicare Part D claims for 102 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. 260 claims were for opioids.

  1. Elizabeth Watson465
  2. Specialty average346

Most prescribed

  1. Oxycodone Hcl162 claims
  2. Hydrocodone-Acetaminophen77 claims
  3. Ibuprofen63 claims
  4. Cephalexin47 claims
  5. Ondansetron Odt39 claims
  6. Amoxicillin38 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. Permanente Medical Group IncSouth San Francisco, CA

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

Elizabeth M. Watson among 2,276 orthopaedic surgery physician records in California

Elizabeth M. Watson, MD 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 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 46% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated1992 · 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. Andrew Fang, MDSouth San Francisco, CA 940801568540169
  2. Eugene Galvin, MDSouth San Francisco, CA 940801528146149
  3. James Johnson, MDSouth San Francisco, CA 940801043398670
  4. Christopher Lehman, M.D.South San Francisco, CA 940801588687685
  5. Michael Macavoy, MDSouth San Francisco, CA 940801447338009
  6. Robert Silverstein, MDSouth San Francisco, CA 940801417035015
  7. Sureshan Sivananthan, MDSunnyvale, CA 940871578835187
  8. Ran AtzmonRedwood City, CA 940631558023267

Common questions

What is Elizabeth M. Watson, MD's NPI number?

Elizabeth M. Watson, MD's National Provider Identifier (NPI) is 1467530071, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Elizabeth M. Watson, MD located?

The NPPES record lists a practice address at 1200 EL Camino Real, South San Francisco, CA, 94080. Phone: (650) 742-2000. Providers update this record themselves, so call before visiting.

How can I verify Elizabeth M. Watson, MD's license?

NPPES lists California license number G83419, 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 Elizabeth M. Watson, MD prescribe under Medicare Part D?

In 2024, Elizabeth M. Watson, MD had 465 Medicare Part D claims for 102 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.