NPPES file of Aug 9, 2026

Yanling Xu, MD

Internal Medicine Physician · San Francisco, CA

Yanling Xu, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1770887598, issued on Jan 9, 2011. Check the license (California A114691, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770887598
Name
Yanling Xu
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
A114691 CA
Self-reported in NPPES; status is on the state search
Practice location
2250 Hayes St, San Francisco, CA 94117
Phone
(415) 750-5995
Enumerated
Jan 9, 2011
Record last updated
Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20110912000625); accepts Medicare assignment
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 2250 Hayes St

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

  1. Pedro Aceves-Casillas, M.D.Internal Medicine Physician1144252396
  2. William Breall, M.D.Cardiovascular Disease Physician1124042635
  3. Kwok Chan, M.D.Internal Medicine Physician1063413714
  4. James Chun, M.D.Cardiovascular Disease Physician1134143506
  5. Joel Clark, DPMPodiatrist1093773681
  6. Peter Curran, MDCardiovascular Disease Physician1366422347

Verify Yanling Xu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A114691
    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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42% more Medicare Part D claims than the average internal medicine physician in 2024

4,497 Medicare Part D claims for 526 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 62 claims were for opioids.

  1. Yanling Xu4,497
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium496 claims
  2. Amlodipine Besylate458 claims
  3. Losartan Potassium283 claims
  4. Levothyroxine Sodium176 claims
  5. Lisinopril163 claims
  6. Atenolol157 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncRedwood City, CA

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

Yanling Xu among 17,696 internal medicine physician records in California

Yanling Xu, MD 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 2011, is newer than 66% of them.

  • NPI issued2011 · 66% of these records are older, 32% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated1996 · median 2004 among the 11,065 with a school on file
  • Record last updated2021 · 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. Pedro Aceves-Casillas, M.D.San Francisco, CA 941171144252396
  2. Charles Allison, M.D.San Francisco, CA 941171376541060
  3. Carl Bricca, D.O.San Francisco, CA 941171114925385
  4. Robert BrodySan Francisco, CA 941171801815600
  5. Kwok Chan, M.D.San Francisco, CA 941171063413714
  6. Diana Hilbert, M.D.San Francisco, CA 941171386642551
  7. William Kell, M.DSan Francisco, CA 941171528094547
  8. Kenneth Maybury, M.D.San Francisco, CA 941171295733459

Common questions

What is Yanling Xu, MD's NPI number?

Yanling Xu, MD's National Provider Identifier (NPI) is 1770887598, issued on Jan 9, 2011. An NPI identifies a provider in billing; it is not a license.

Where is Yanling Xu, MD located?

The NPPES record lists a practice address at 2250 Hayes St, San Francisco, CA, 94117. Phone: (415) 750-5995. Providers update this record themselves, so call before visiting.

How can I verify Yanling Xu, MD's license?

NPPES lists California license number A114691, 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 Yanling Xu, MD prescribe under Medicare Part D?

In 2024, Yanling Xu, MD had 4,497 Medicare Part D claims for 526 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.