NPPES file of Aug 9, 2026

Christina Gu

Endocrinology, Diabetes & Metabolism Physician · Stanford, CA

Christina Gu is an endocrinology, diabetes & metabolism physician with a practice address in Stanford, California, and NPI 1104575000, issued on Mar 20, 2022. Check the license (California A188973, 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
1104575000
Name
Christina Gu
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License number
A188973 CA
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr RM S025, Stanford, CA 94305
Phone
(650) 723-5948
Enumerated
Mar 20, 2022
Record last updated
Apr 26, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 300 Pasteur Dr RM S025

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

  1. Tamaryn Fox, MDEndocrinology, Diabetes & Metabolism Physician1447745161
  2. Sun Kim, M.D., M.S.Endocrinology, Diabetes & Metabolism Physician1083894844
  3. Fredric Kraemer, MDEndocrinology, Diabetes & Metabolism Physician1780796037
  4. Michael Li, MD, PHDInternal Medicine Physician1023758380
  5. Jairo Norena Velasquez, MDEndocrinology, Diabetes & Metabolism Physician1174152938
  6. Kaleena Zhang, MDStudent in an Organized Health Care Education/Training Program1366185480

Verify Christina Gu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A188973
    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

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87% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024

330 Medicare Part D claims for 59 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.

  1. Christina Gu330
  2. Specialty average2,630

Most prescribed

  1. Levothyroxine Sodium19 claims
  2. Amlodipine Besylate16 claims
  3. Atorvastatin Calcium16 claims
  4. Gabapentin15 claims
  5. Fluoxetine Hcl12 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: $25.04

1 payment: food and beverage; the largest payer was Kiniksa Pharmaceuticals International, plc. The 5,661 providers of this specialty with any payment received $5,742.15 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Christina Gu$25.04
  2. Specialty average$5,742.15

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Christina Gu among 1,131 endocrinology, diabetes & metabolism physician records in California

Christina Gu is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than over 99% of them.

  • NPI issued2022 · over 99% of these records are older, under 1% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileNo · 69% of these records are
  • Record last updated2025 · 57% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endocrinology, Diabetes & Metabolism Physician providers in California

There are 1,131 endocrinology, diabetes & metabolism physician records in California.

The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes

  1. Justin Annes, M.D.Stanford, CA 943051013027424
  2. Marina Basina, MDStanford, CA 943051023196805
  3. Carlos Camargo, M.D.Stanford, CA 943051831233253
  4. Ajay Chawla, MD, PHDStanford, CA 943051154457315
  5. Neil Gesundheit, MDStanford, CA 943051871629030
  6. Andrew Hoffman, M.D.Stanford, CA 943051619924685
  7. Fredric Kraemer, MDStanford, CA 943051780796037
  8. Jennifer Lee, M.D.Stanford, CA 943051558455071

Common questions

What is Christina Gu's NPI number?

Christina Gu's National Provider Identifier (NPI) is 1104575000, issued on Mar 20, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Christina Gu located?

The NPPES record lists a practice address at 300 Pasteur Dr RM S025, Stanford, CA, 94305. Phone: (650) 723-5948. Providers update this record themselves, so call before visiting.

How can I verify Christina Gu's license?

NPPES lists California license number A188973, 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 Christina Gu prescribe under Medicare Part D?

In 2024, Christina Gu had 330 Medicare Part D claims for 59 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.