John Fong, MD
NPI 1841261054 · Psychiatry Physician · Stockton, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Fong, MD is a Psychiatry Physician provider in Stockton, CA (NPI 1841261054).
Provider details
- NPI number
- 1841261054
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G49494 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
585 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 468 | $108 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, at Least 10 Minutes99307 | 90 | $40 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 27 | $143 |
Typical Medicare-allowed amounts for these services range $40–$143 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lorazepam | 289 | 37 |
| Olanzapine | 286 | 32 |
| Clozapine | 284 | 15 |
| Lithium Carbonate | 269 | 14 |
| Olanzapinebrand: Olanzapine Odt | 248 | 23 |
| Divalproex Sodium | 181 | 17 |
| Quetiapine Fumarate | 130 | 13 |
| Haloperidol |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-01-27
- Last updated
- 2010-01-06
Frequently asked questions
- What is John Fong's NPI number?
- John Fong's National Provider Identifier (NPI) is 1841261054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Fong's specialty?
- John Fong is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is John Fong located?
- John Fong's practice location on file with NPPES is 1130 Monaco Ct, Stockton, CA 95207.
- What is John Fong's phone number?
- The practice phone number listed in the NPPES registry for John Fong is (209) 478-2060.
- Does John Fong accept Medicare?
- John Fong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Fong's NPI active?
- Yes — John Fong's NPI (1841261054) is active in the NPPES registry as of the last update on 2010-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.