Douglas Tong, M.D.
NPI 1811905094 · Internal Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Tong, M.D. is a Internal Medicine Physician provider in San Jose, CA (NPI 1811905094).
Provider details
- NPI number
- 1811905094
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A73050 (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
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
437 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 156 | $111 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 91 | $157 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $155 |
| 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 | 58 | $19 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 20 | $194 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 219 | 59 |
| Amlodipine Besylate | 219 | 62 |
| Losartan Potassium | 105 | 26 |
| Metformin Hcl | 104 | 25 |
| Levothyroxine Sodium | 99 | 21 |
| Tamsulosin Hcl | 95 | 26 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-04
- Last updated
- 2011-12-08
Frequently asked questions
- What is Douglas Tong's NPI number?
- Douglas Tong's National Provider Identifier (NPI) is 1811905094, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Tong's specialty?
- Douglas Tong is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Tong located?
- Douglas Tong's practice location on file with NPPES is 7225 Rainbow Dr, San Jose, CA 95129-4552.
- What is Douglas Tong's phone number?
- The practice phone number listed in the NPPES registry for Douglas Tong is (408) 366-0595.
- Does Douglas Tong accept Medicare?
- Douglas Tong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Tong's NPI active?
- Yes — Douglas Tong's NPI (1811905094) is active in the NPPES registry as of the last update on 2011-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.