Jonathan Parker, M.D.
NPI 1699114504 · Family Medicine Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Parker, M.D. is a Family Medicine Physician provider in Fontana, CA (NPI 1699114504).
Provider details
- NPI number
- 1699114504
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A135965 (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
12 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 · 106 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 792 | 322 |
| Lisinopril | 369 | 165 |
| Amlodipine Besylate | 315 | 149 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 240 | 77 |
| Metformin Hcl | 224 | 108 |
| Simvastatin | 213 | 86 |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-06-24
- Last updated
- 2024-05-01
- Certified
- 2024-05-01
Frequently asked questions
- What is Jonathan Parker's NPI number?
- Jonathan Parker's National Provider Identifier (NPI) is 1699114504, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Parker's specialty?
- Jonathan Parker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Parker located?
- Jonathan Parker's practice location on file with NPPES is 9961 Sierra Ave # Mob1, Fontana, CA 92335-6720.
- What is Jonathan Parker's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Parker is (909) 427-5083.
- Does Jonathan Parker accept Medicare?
- Jonathan Parker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Parker's NPI active?
- Yes — Jonathan Parker's NPI (1699114504) is active in the NPPES registry as of the last update on 2024-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.