Jon Harrison, MD
NPI 1912046616 · Internal Medicine Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jon Harrison, MD is a Internal Medicine Physician provider in San Diego, CA (NPI 1912046616).
Provider details
- NPI number
- 1912046616
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G81597 (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 · 96 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 493 | 178 |
| Lisinopril | 346 | 127 |
| Losartan Potassium | 329 | 110 |
| Amlodipine Besylate | 310 | 115 |
| Levothyroxine Sodium | 310 | 105 |
| Metformin Hcl | 281 | 100 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-02-06
- Last updated
- 2021-11-29
Frequently asked questions
- What is Jon Harrison's NPI number?
- Jon Harrison's National Provider Identifier (NPI) is 1912046616, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jon Harrison's specialty?
- Jon Harrison is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jon Harrison located?
- Jon Harrison's practice location on file with NPPES is 4647 Zion Ave, San Diego, CA 92120-2507.
- What is Jon Harrison's phone number?
- The practice phone number listed in the NPPES registry for Jon Harrison is (619) 528-5000.
- Does Jon Harrison accept Medicare?
- Jon Harrison is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jon Harrison's NPI active?
- Yes — Jon Harrison's NPI (1912046616) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.