Prachaya Nitichaikulvatana, M.D.
NPI 1861693228 · Rheumatology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Prachaya Nitichaikulvatana, M.D. is a Rheumatology Physician provider in Stanford, CA (NPI 1861693228).
Provider details
- NPI number
- 1861693228
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C175548 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
557 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 156 | $153 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 144 | $19 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 51 | $204 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 49 | $19 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydroxychloroquine Sulfate | 127 | 34 |
| Prednisone | 126 | 43 |
| Methotrexate Sodiumbrand: Methotrexate | 50 | 17 |
| Alendronate Sodium | 30 | 11 |
| Celecoxib | 28 | 13 |
| Allopurinol | 26 | — |
| Gabapentin | 23 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-31
- Last updated
- 2024-04-15
- Certified
- 2024-04-15
Frequently asked questions
- What is Prachaya Nitichaikulvatana's NPI number?
- Prachaya Nitichaikulvatana's National Provider Identifier (NPI) is 1861693228, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Prachaya Nitichaikulvatana's specialty?
- Prachaya Nitichaikulvatana is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Prachaya Nitichaikulvatana located?
- Prachaya Nitichaikulvatana's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Prachaya Nitichaikulvatana's phone number?
- The practice phone number listed in the NPPES registry for Prachaya Nitichaikulvatana is (650) 723-4000.
- Does Prachaya Nitichaikulvatana accept Medicare?
- Prachaya Nitichaikulvatana is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Prachaya Nitichaikulvatana's NPI active?
- Yes — Prachaya Nitichaikulvatana's NPI (1861693228) is active in the NPPES registry as of the last update on 2024-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.