NPPES file of Aug 9, 2026

Alisson Diann Sombredero Sanchez, M.D

Internal Medicine Physician · San Francisco, CA

Alisson Diann Sombredero Sanchez, M.D is an internal medicine physician with a practice address in San Francisco, California, and NPI 1932470978, issued on Jan 23, 2012. Check the license (California A119736, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1932470978
Name
Alisson Diann Sombredero Sanchez
Credential
M.D
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A119736 CA
Self-reported in NPPES; status is on the state search
Practice location
3838 California St, San Francisco, CA 94118
Phone
(415) 600-4900
Enumerated
Jan 23, 2012
Record last updated
Dec 14, 2023
Fax
(415) 369-1367
Medicare enrollment
Enrolled (PECOS I20120531000620); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 3838 California St

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

  1. Michael Abel, M.D.Colon & Rectal Surgery Physician1447253380
  2. Veronika Archer, PA-CPhysician Assistant1659424190
  3. Dilys Bart, MDOphthalmology Physician1598843963
  4. Secily Bason-Mitchell, M.D.Obstetrics Physician1992872089
  5. John Belzer, M.D.Sports Medicine (Orthopaedic Surgery) Physician1417043993
  6. Catherine Berger-Dujmovic, MDObstetrics & Gynecology Physician1467470070

Verify Alisson Diann Sombredero Sanchez in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A119736
    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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76% fewer Medicare Part D claims than the average internal medicine physician in 2024

761 Medicare Part D claims for 175 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Alisson Sombredero Sanchez761
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium60 claims
  2. Biktarvy39 claims
  3. Amlodipine Besylate26 claims
  4. Albuterol Sulfate Hfa25 claims
  5. Lisinopril23 claims
  6. Levothyroxine Sodium20 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 MIPS final score for 2023 (Medicare payment program): 84.9 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score67.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $565.96

12 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alisson Sombredero Sanchez$565.96
  2. Specialty average$1,303.06

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

  1. Sutter Bay Medical FoundationSan Francisco, CA

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

Alisson Diann Sombredero Sanchez among 17,696 internal medicine physician records in California

Alisson Diann Sombredero Sanchez, M.D is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 68% of them.

  • NPI issued2012 · 68% of these records are older, 29% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2004 · median 2004 among the 11,065 with a school on file
  • Record last updated2023 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,318 internal medicine physician records list a practice address in San Francisco

They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Nikola Bukurov, M.D.San Francisco, CA 941181861423279
  2. Lee Tat Chan, M.D.San Francisco, CA 941181992728414
  3. Randolph Chase, M.D.San Francisco, CA 941181063428225
  4. Catherine Collins, M.D.San Francisco, CA 941181346265790
  5. Robert Dobrow, MDSan Francisco, CA 941181356336051
  6. Joyce Hansen, M.D.San Francisco, CA 941181639190085
  7. Karen Khoo, MDSan Francisco, CA 941181629031430
  8. Eric Kwok, M.D.San Francisco, CA 941181447231618

Common questions

What is Alisson Diann Sombredero Sanchez, M.D's NPI number?

Alisson Diann Sombredero Sanchez, M.D's National Provider Identifier (NPI) is 1932470978, issued on Jan 23, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Alisson Diann Sombredero Sanchez, M.D located?

The NPPES record lists a practice address at 3838 California St, San Francisco, CA, 94118. Phone: (415) 600-4900. Providers update this record themselves, so call before visiting.

How can I verify Alisson Diann Sombredero Sanchez, M.D's license?

NPPES lists California license number A119736, 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 Alisson Diann Sombredero Sanchez, M.D prescribe under Medicare Part D?

In 2024, Alisson Diann Sombredero Sanchez, M.D had 761 Medicare Part D claims for 175 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

What is Alisson Diann Sombredero Sanchez, M.D's MIPS final score?

The 2023 MIPS final score is 84.9 of 100. 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.