NPPES file of Aug 9, 2026

Chaewon Song, MD

Geriatric Medicine (Internal Medicine) Physician · Garden Grove, CA

Chaewon Song, MD is a geriatric medicine (internal medicine) physician with a practice address in Garden Grove, California, and NPI 1972589687, issued on Dec 15, 2005. Check the license (California C52295, 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
1972589687
Name
Chaewon Song
Credential
MD
Primary taxonomy
Geriatric Medicine (Internal Medicine) Physician 207RG0300X
License number
C52295 CA
Self-reported in NPPES; status is on the state search
Practice location
12665 Garden Grove Blvd, Garden Grove, CA 92843
Phone
(714) 530-3740
Enumerated
Dec 15, 2005
Record last updated
Nov 7, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(714) 530-0582
Medicaid ID
001397430 CT
Medicare enrollment
Enrolled (PECOS I20070117000542); 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 12665 Garden Grove Blvd

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

  1. Mumtaz Ali, M.DSpecialist1700849049
  2. James Boyce, M.D.Ophthalmology Physician1457351652
  3. Allen Chou, MDGeriatric Medicine (Internal Medicine) Physician1215919915
  4. Douglas Clark, M.D.Internal Medicine Physician1780688572
  5. Naveen Dhar, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1871604116
  6. Usha Dhar, M.D.Family Medicine Physician1699886846

Verify Chaewon Song in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C52295
    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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9.0 times the Medicare Part D claims of the average geriatric medicine (internal medicine) physician in 2024

38,165 Medicare Part D claims for 1,397 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 249 claims were for opioids.

  1. Chaewon Song38,165
  2. Specialty average4,246

Most prescribed

  1. Atorvastatin Calcium2,757 claims
  2. Amlodipine Besylate2,314 claims
  3. Losartan Potassium1,792 claims
  4. Metformin Hcl1,078 claims
  5. Omeprazole986 claims
  6. Creon927 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: $2,334.22

115 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 1,004 providers of this specialty with any payment received $1,720.82 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Chaewon Song$2,334.22
  2. Specialty average$1,720.82

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

Chaewon Song among 532 geriatric medicine (internal medicine) physician records in California

Chaewon Song, MD is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 93% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 51% of these records are
  • Graduated1997 · median 1999 among the 271 with a school on file
  • Record last updated2013 · 62% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Internal Medicine) Physician providers in California

There are 532 geriatric medicine (internal medicine) physician records in California.

The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes

  1. Allen Chou, MDGarden Grove, CA 928431215919915
  2. Giselle Seron, MDGarden Grove, CA 928441790858900
  3. Shashidar Acharya, M.D.Orange, CA 928661770685521
  4. Robert Buster, M.D.Orange, CA 928681841343076
  5. Mary Harward, M.D.Orange, CA 928681407835275
  6. Kassandra King, DOOrange, CA 928681215498936
  7. K.a. Manisha PereraOrange, CA 928681952783862
  8. Angela Tan, MDOrange, CA 928681437358173

Common questions

What is Chaewon Song, MD's NPI number?

Chaewon Song, MD's National Provider Identifier (NPI) is 1972589687, issued on Dec 15, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Chaewon Song, MD located?

The NPPES record lists a practice address at 12665 Garden Grove Blvd, Garden Grove, CA, 92843. Phone: (714) 530-3740. Providers update this record themselves, so call before visiting.

How can I verify Chaewon Song, MD's license?

NPPES lists California license number C52295, 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 Chaewon Song, MD prescribe under Medicare Part D?

In 2024, Chaewon Song, MD had 38,165 Medicare Part D claims for 1,397 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.