Jeffrey Thomas Bortz, M.D.
MOHS-Micrographic Surgery Physician · Walnut Creek, CA
Jeffrey Thomas Bortz, M.D. is a mohs-micrographic surgery physician with a practice address in Walnut Creek, California, and NPI 1710191382, issued on May 10, 2007. Check the license (California A487440, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Thomas Bortz
- Credential
- M.D.
- Primary taxonomy
- MOHS-Micrographic Surgery Physician 207ND0101X
- License number
- A487440 CA
Self-reported in NPPES; status is on the state search - Practice location
- 355 Lennon LN, Walnut Creek, CA 94598
- Phone
- (925) 932-7704
- Enumerated
- May 10, 2007
- Record last updated
- Jun 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070523000589); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest mohs-micrographic surgery physician records → All 164 in California → Look up another NPI →
Also registered at 355 Lennon LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tiffany Ham, D.D.S., M.S.Pediatric Dentistry1972822989
- Kenneth Hsiao, MDUrology Physician1265427975
- Alexandra Ingram, P.A.Surgical Physician Assistant1063761500
Verify Jeffrey Thomas Bortz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A487440Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average mohs-micrographic surgery physician in 2024
137 Medicare Part D claims for 95 beneficiaries, against an average of 570 among the 1,396 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin41 claims
- Doxycycline Hyclate28 claims
- Mupirocin21 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 98.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $89.85
3 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,074 providers of this specialty with any payment received $4,075.23 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Golden State Dermatology Associates, Inc.Walnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jeffrey Thomas Bortz among 164 mohs-micrographic surgery physician records in California
Jeffrey Thomas Bortz, M.D. is one of 164 mohs-micrographic surgery physician records with a practice address in California. 95% 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 45% of them.
- NPI issued2007 · 45% of these records are older, 41% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileYes · 87% of these records are
- Graduated1989 · median 2004 among the 143 with a school on file
- Record last updated2013 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ND0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
MOHS-Micrographic Surgery Physician providers in California
There are 164 mohs-micrographic surgery physician records in California.
All 164 in California → Every provider in Walnut Creek → MOHS-Micrographic Surgery Physician nationwide →
The 8 mohs-micrographic surgery physician records with the nearest ZIP codes
- Ji Won Ahn, MDWalnut Creek, CA 945981023460243
- Heather Nudo, PAWalnut Creek, CA 945981518077411
- Kathleen Ting, MDWalnut Creek, CA 945981407934599
- John Geisse, M.D.Vallejo, CA 945901275571028
- Joshua Spanogle, M.D.Vallejo, CA 945901750564407
- Lauren Gebauer, M.D.Napa, CA 945591386960961
- Kathryn Kent, MDNapa, CA 945581811159387
- Sumaira Aasi, MDStanford, CA 943051780675181
Common questions
What is Jeffrey Thomas Bortz, M.D.'s NPI number?
Jeffrey Thomas Bortz, M.D.'s National Provider Identifier (NPI) is 1710191382, issued on May 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Thomas Bortz, M.D. located?
The NPPES record lists a practice address at 355 Lennon LN, Walnut Creek, CA, 94598. Phone: (925) 932-7704. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Thomas Bortz, M.D.'s license?
NPPES lists California license number A487440, 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 Jeffrey Thomas Bortz, M.D. prescribe under Medicare Part D?
In 2024, Jeffrey Thomas Bortz, M.D. had 137 Medicare Part D claims for 95 beneficiaries; the average among mohs-micrographic surgery physician prescribers was 570. Part D covers Medicare prescriptions only.
What is Jeffrey Thomas Bortz, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.