NPPES file of Aug 9, 2026

Natsurang Chongkrairatanakul, M.D.

Endocrinology, Diabetes & Metabolism Physician · San Diego, CA

Natsurang Chongkrairatanakul, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in San Diego, California, and NPI 1992996375, issued on Aug 9, 2007. Check the license (California C159744, 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
1992996375
Name
Natsurang Chongkrairatanakul
Credential
M.D.
Primary taxonomy
Endocrinology, Diabetes & Metabolism Physician 207RE0101X
License number
C159744 CA
Self-reported in NPPES; status is on the state search
Practice location
16899 W Bernardo Dr Ofc, San Diego, CA 92127
Phone
(858) 568-8525
Enumerated
Aug 9, 2007
Record last updated
Mar 20, 2024
Medicaid IDs
1992996375 WI
35429 SC
Medicare enrollment
Enrolled (PECOS I20190416002762); 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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Verify Natsurang Chongkrairatanakul in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C159744
    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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67% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024

857 Medicare Part D claims for 144 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.

  1. Natsurang Chongkrairatanakul857
  2. Specialty average2,630

Most prescribed

  1. Trulicity107 claims
  2. Levothyroxine Sodium91 claims
  3. Methimazole38 claims
  4. Metformin Hcl29 claims
  5. Metformin Hcl Er28 claims
  6. Nano 2nd Gen Pen Needle24 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 practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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 score74.6
  2. Costout of 100 · 30%58.7
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

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

Bills Medicare through 2 group practices

  1. Sharp Rees-Stealy Medical Group IncSan Diego, CA
  2. Southern California Permanente Medical GroupSan Diego, CA

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

Natsurang Chongkrairatanakul among 1,131 endocrinology, diabetes & metabolism physician records in California

Natsurang Chongkrairatanakul, M.D. 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 2007, is newer than 46% of them.

  • NPI issued2007 · 46% of these records are older, 42% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2003 · median 2003 among the 779 with a school on file
  • Record last updated2024 · 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. Puneet Arora, MDSan Diego, CA 921301164484960
  2. Alain BaronSan Diego, CA 921301356845440
  3. Simon Bruce, M.D.San Diego, CA 921301043648967
  4. Juan Frias, M.D.San Diego, CA 921301134437601
  5. Ken Fujioka, M.D.San Diego, CA 921301811007255
  6. Samantha Harris, M.D.San Diego, CA 921301720305436
  7. Michael Lee, M.D.San Diego, CA 921301760406649
  8. Adrienne Nassar, M.D.San Diego, CA 921301063625002

Common questions

What is Natsurang Chongkrairatanakul, M.D.'s NPI number?

Natsurang Chongkrairatanakul, M.D.'s National Provider Identifier (NPI) is 1992996375, issued on Aug 9, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Natsurang Chongkrairatanakul, M.D. located?

The NPPES record lists a practice address at 16899 W Bernardo Dr Ofc, San Diego, CA, 92127. Phone: (858) 568-8525. Providers update this record themselves, so call before visiting.

How can I verify Natsurang Chongkrairatanakul, M.D.'s license?

NPPES lists California license number C159744, 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 Natsurang Chongkrairatanakul, M.D. prescribe under Medicare Part D?

In 2024, Natsurang Chongkrairatanakul, M.D. had 857 Medicare Part D claims for 144 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.

What is Natsurang Chongkrairatanakul, M.D.'s MIPS final score?

The 2023 MIPS final score is 73.6 of 100, reported for the practice group. 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.