Lambert J. Stumpel, DDS
Dentist · San Francisco, CA
Lambert J. Stumpel, DDS is a dentist with a practice address in San Francisco, California, and NPI 1891757167, issued on Apr 3, 2006. Check the license (California 38605, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Lambert J. Stumpel
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 38605 CA
Self-reported in NPPES; status is on the state search - Practice location
- 450 Sutter St, San Francisco, CA 94108
- Phone
- (415) 362-7269
- Enumerated
- Apr 3, 2006
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 450 Sutter St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lambert J. Stumpel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 38605Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average dentist in 2024
32 Medicare Part D claims for 18 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Industry payments in 2024: $161.67
2 payments; by number, the most common kind was food and beverage; the largest payer was Straumann USA LLC. The 31,974 providers of this specialty with any payment received $540.36 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.
Lambert J. Stumpel among 14,729 dentist records in California
Lambert J. Stumpel, DDS is one of 14,729 dentist records with a practice address in California. 56% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 82% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2026 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
495 dentist records list a practice address in San Francisco
They are 495 of the 38,143 NPPES records with a practice address in San Francisco, and 14,729 dentist records in California.
All 14,729 in California → Every provider in San Francisco → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Mohamed Ali, D.D.S.San Francisco, CA 941081619062528
- Mahsa Hakim, DDSSan Francisco, CA 941081063586998
- Vincent Jue, D.D.S.San Francisco, CA 941081609916766
- Keyvan Kafayi, D.D.S.San Francisco, CA 941081639251606
- Gladys Lim, D.D.S.San Francisco, CA 941081972651073
- Edward Loev, D.M.D.San Francisco, CA 941081528087269
- Melissa Maus, DDSSan Francisco, CA 941081033273529
- Namrata Patel, DDSSan Francisco, CA 941081033146246
Common questions
What is Lambert J. Stumpel, DDS's NPI number?
Lambert J. Stumpel, DDS's National Provider Identifier (NPI) is 1891757167, issued on Apr 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lambert J. Stumpel, DDS located?
The NPPES record lists a practice address at 450 Sutter St, San Francisco, CA, 94108. Phone: (415) 362-7269. Providers update this record themselves, so call before visiting.
How can I verify Lambert J. Stumpel, DDS's license?
NPPES lists California license number 38605, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Lambert J. Stumpel, DDS prescribe under Medicare Part D?
In 2024, Lambert J. Stumpel, DDS had 32 Medicare Part D claims for 18 beneficiaries; the average among dentist prescribers was 86. 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.