Jocelyn J. Dunn, MD
Surgery Physician · Portola Valley, CA
Jocelyn J. Dunn, MD is a surgery physician with a practice address in Portola Valley, California, and NPI 1689684961, issued on Aug 9, 2006. Check the license (California G064087, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jocelyn J. Dunn
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G064087 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Portola RD Ste B, Portola Valley, CA 94028
- Phone
- (650) 322-1737
- Enumerated
- Aug 9, 2006
- Record last updated
- Apr 25, 2023
- Fax
- (650) 325-5778
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 150 Portola RD Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Fay, DPTPhysical Therapist1518444298
Verify Jocelyn J. Dunn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G064087Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average surgery physician in 2024
48 Medicare Part D claims for 19 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 15 claims were for opioids.
Most prescribed
- Cephalexin18 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.
Jocelyn J. Dunn among 3,118 surgery physician records in California
Jocelyn J. Dunn, MD is one of 3,118 surgery physician records with a practice address in California. 75% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 surgery physician record lists a practice address in Portola Valley
They are 1 of the 84 NPPES records with a practice address in Portola Valley, and 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Portola Valley → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Martin Bronk, MDMenlo Park, CA 940251083678726
- David Gregg, MDMenlo Park, CA 940251891759536
- Sanford Roberts, MDMenlo Park, CA 940251821594631
- Karen Whang, MDMenlo Park, CA 940251477668622
- Paul Dagum, MDLos Altos Hills, CA 940241386319788
- Michael Osborne, MDHalf Moon Bay, CA 940191588163729
- Carla Cassani, MDMountain View, CA 940401619064227
- Saul Eisenstat, MDMountain View, CA 940401962464776
Common questions
What is Jocelyn J. Dunn, MD's NPI number?
Jocelyn J. Dunn, MD's National Provider Identifier (NPI) is 1689684961, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jocelyn J. Dunn, MD located?
The NPPES record lists a practice address at 150 Portola RD Ste B, Portola Valley, CA, 94028. Phone: (650) 322-1737. Providers update this record themselves, so call before visiting.
How can I verify Jocelyn J. Dunn, MD's license?
NPPES lists California license number G064087, 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 Jocelyn J. Dunn, MD prescribe under Medicare Part D?
In 2024, Jocelyn J. Dunn, MD had 48 Medicare Part D claims for 19 beneficiaries; the average among surgery physician prescribers was 147. 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.