Garrison Tong, MD
NPI 1639240609 · Endocrinology, Diabetes & Metabolism Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Garrison Tong, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Los Angeles, CA (NPI 1639240609).
Provider details
- NPI number
- 1639240609
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A70113 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 162 | 58 |
| Methimazole | 112 | 46 |
| Teriparatidebrand: Forteo | 33 | — |
| Insulin Lisprobrand: Humalog | 22 | — |
| Insulin Glargine-Yfgn | 20 | — |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 20 | — |
| Cinacalcet Hcl | 17 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-13
- Last updated
- 2021-11-30
Frequently asked questions
- What is Garrison Tong's NPI number?
- Garrison Tong's National Provider Identifier (NPI) is 1639240609, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Garrison Tong's specialty?
- Garrison Tong is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Garrison Tong located?
- Garrison Tong's practice location on file with NPPES is 4733 W Sunset Blvd, Los Angeles, CA 90027-6021.
- What is Garrison Tong's phone number?
- The practice phone number listed in the NPPES registry for Garrison Tong is (323) 783-4011.
- Does Garrison Tong accept Medicare?
- Garrison Tong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Garrison Tong's NPI active?
- Yes — Garrison Tong's NPI (1639240609) is active in the NPPES registry as of the last update on 2021-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.