Prachaya Nitichaikulvatana, M.D.
Rheumatology Physician · Stanford, CA
Prachaya Nitichaikulvatana, M.D. is a rheumatology physician with a practice address in Stanford, California, and NPI 1861693228, issued on May 31, 2007. Check the license (California C175548, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Prachaya Nitichaikulvatana
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- C175548 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- May 31, 2007
- Record last updated
- Apr 15, 2024
- Medicaid ID
- 3081927 NH
- Medicare enrollment
- Enrolled (PECOS I20220426000795); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mohamad Abbass, MDNeurological Surgery Physician1679492151
Verify Prachaya Nitichaikulvatana in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C175548Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average rheumatology physician in 2024
702 Medicare Part D claims for 146 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Hydroxychloroquine Sulfate127 claims
- Prednisone126 claims
- Methotrexate50 claims
- Alendronate Sodium30 claims
- Celecoxib28 claims
- Allopurinol26 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): 76.5 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Stanford Health CareStanford, CA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Prachaya Nitichaikulvatana among 926 rheumatology physician records in California
Prachaya Nitichaikulvatana, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 45% of them.
- NPI issued2007 · 45% of these records are older, 42% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Record last updated2024 · 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 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Stanford → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Matthew Baker, MDStanford, CA 943051518252204
- Yashaar Chaichian, MDStanford, CA 943051174788103
- Mark Genovese, M.D.Stanford, CA 943051487711875
- Jorg Goronzy, M.D.Stanford, CA 943051720097124
- Jison Hong, MDStanford, CA 943051740441823
- Tamiko Katsumoto, M.D.Stanford, CA 943051952571317
- Victoria Kelly, M.D.Stanford, CA 943051366622193
- Janice Lin, M.D.Stanford, CA 943051427217223
Common questions
What is Prachaya Nitichaikulvatana, M.D.'s NPI number?
Prachaya Nitichaikulvatana, M.D.'s National Provider Identifier (NPI) is 1861693228, issued on May 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Prachaya Nitichaikulvatana, M.D. located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Prachaya Nitichaikulvatana, M.D.'s license?
NPPES lists California license number C175548, 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 Prachaya Nitichaikulvatana, M.D. prescribe under Medicare Part D?
In 2024, Prachaya Nitichaikulvatana, M.D. had 702 Medicare Part D claims for 146 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Prachaya Nitichaikulvatana, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.5 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.