NPPES file of Aug 9, 2026

Grace S. Ahn

Student in an Organized Health Care Education/Training Program · La Jolla, CA

Grace S. Ahn is a student in an organized health care education/training program with a practice address in La Jolla, California, and NPI 1295317816, issued on Apr 23, 2021. Check the license with the California board that licenses this profession; 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
1295317816
Name
Grace S. Ahn
Primary taxonomy
Student in an Organized Health Care Education/Training Program 390200000X
Practice location
9500 Gilman Dr, La Jolla, CA 92093
Phone
(858) 534-0830
Enumerated
Apr 23, 2021
Record last updated
Apr 23, 2021 (not updated in 5 years: call before relying on the address or phone)
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 9500 Gilman Dr

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

  1. Mickey Abraham, MD, MSStudent in an Organized Health Care Education/Training Program1609403732
  2. Angela Acfalle, NP CNSAdult Health Nurse Practitioner1013983857
  3. Kelley Adams, M.D.Psychiatry Physician1215039771
  4. Aaron AhdootStudent in an Organized Health Care Education/Training Program1558217901
  5. Ginger Armas, PHDCounselor1396125035
  6. Stephanie Aron, MDStudent in an Organized Health Care Education/Training Program1912758392

Verify Grace S. Ahn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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
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76% fewer Medicare Part D claims than the average student in an organized health care education/training program in 2024

44 Medicare Part D claims for 25 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D.

  1. Grace Ahn44
  2. Specialty average185

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: $1,003.04

11 payments; by number, the most common kind was food and beverage; the largest payer was Ucb, Inc. The 13,278 providers of this specialty with any payment received $608.08 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Grace Ahn$1,003.04
  2. Specialty average$608.08

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

317 student in an organized health care education/training program records list a practice address in La Jolla

They are 317 of the 3,648 NPPES records with a practice address in La Jolla, and 40,652 student in an organized health care education/training program records in California.

Other student in an organized health care education/training program records in California

  1. Sanad A'BasiFresno, CA1720915770
  2. Alexander Aabedi, MDSan Francisco, CA1245971480
  3. Andre AabediPomona, CA1891582102
  4. Natalie Aabodi, DMDPomona, CA1851085187
  5. Dalal Aago, MDEl Cajon, CA1639863103
  6. Megan Aaronson, MD, MSCRLos Angeles, CA1386272102
  7. Manas AavulaPomona, CA1972496644
  8. Joann AbadTulare, CA1639745433
  9. Gioux Ian Abad Mangulabnan, THERAPISTBerkeley, CA1710442702
  10. Sharon AbadaSan Francisco, CA1003492844

Common questions

What is Grace S. Ahn's NPI number?

Grace S. Ahn's National Provider Identifier (NPI) is 1295317816, issued on Apr 23, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Grace S. Ahn located?

The NPPES record lists a practice address at 9500 Gilman Dr, La Jolla, CA, 92093. Phone: (858) 534-0830. Providers update this record themselves, so call before visiting.

How can I verify Grace S. Ahn's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Grace S. Ahn prescribe under Medicare Part D?

In 2024, Grace S. Ahn had 44 Medicare Part D claims for 25 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.