Tonya Ahlborn Chaffee, MD
Pediatrics Physician · San Francisco, CA
Tonya Ahlborn Chaffee, MD is a pediatrics physician with a practice address in San Francisco, California, and NPI 1437261591, issued on Aug 31, 2006. Check the license (California G77911, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tonya Ahlborn Chaffee
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- G77911 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1001 Potrero Ave, San Francisco, CA 94110
- Phone
- (415) 206-8361
- Enumerated
- Aug 31, 2006
- Record last updated
- Dec 27, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (415) 206-3686
- Medicaid ID
- 00G779112 CA
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 1001 Potrero Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elizabeth Abbs, M.D.Internal Medicine Physician1295269983
- Atokena AbeStudent in an Organized Health Care Education/Training Program1043130149
- Mary Ann AbilleRegistered Nurse1699155804
- Nasrin Aboudamous, FNPFamily Nurse Practitioner1699579912
- Elizabeth AdvientoRegistered Nurse1124968987
- Rocio Agraz-Lara, RN, PHNRegistered Nurse1003075995
Verify Tonya Ahlborn Chaffee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77911Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $92,427.68
85 payments; by number, the most common kind was compensation for serving as faculty or as a speaker for a medical education program; the largest payer was Organon Llc. The 21,580 providers of this specialty with any payment received $842.05 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.
Tonya Ahlborn Chaffee among 9,272 pediatrics physician records in California
Tonya Ahlborn Chaffee, MD is one of 9,272 pediatrics physician records with a practice address in California. 31% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 56% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2011 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
514 pediatrics physician records list a practice address in San Francisco
They are 514 of the 38,143 NPPES records with a practice address in San Francisco, and 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in San Francisco → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Naomi Bardach, M.D.San Francisco, CA 941101023049111
- Rebecca Blankenburg, MDSan Francisco, CA 941101528170685
- Diana Bojorquez, MDSan Francisco, CA 941101679685739
- Kevin Chu, M.D.San Francisco, CA 941101356367791
- Delia Dempsey, MDSan Francisco, CA 941101316059488
- Susan Fisher-Owens, MDSan Francisco, CA 941101093770638
- Elena Fuentes-Afflick, MD MPHSan Francisco, CA 941101508978685
- Julia Getzelman, M.D.San Francisco, CA 941101588684393
Common questions
What is Tonya Ahlborn Chaffee, MD's NPI number?
Tonya Ahlborn Chaffee, MD's National Provider Identifier (NPI) is 1437261591, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tonya Ahlborn Chaffee, MD located?
The NPPES record lists a practice address at 1001 Potrero Ave, San Francisco, CA, 94110. Phone: (415) 206-8361. Providers update this record themselves, so call before visiting.
How can I verify Tonya Ahlborn Chaffee, MD's license?
NPPES lists California license number G77911, 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.
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.