Diana Coulson, MD
NPI 1720286602 · Family Medicine Physician · Fontana, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Coulson, MD is a Family Medicine Physician provider in Fontana, CA (NPI 1720286602).
Provider details
- NPI number
- 1720286602
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A97361 (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
18 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 | 464 | 144 |
| Levothyroxine Sodium | 287 | 85 |
| Rosuvastatin Calcium | 155 | 55 |
| Atenolol | 153 | 46 |
| Lisinopril | 150 | 47 |
| Omeprazole | 122 | 39 |
| Losartan Potassium | 121 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-03
- Last updated
- 2021-12-03
Frequently asked questions
- What is Diana Coulson's NPI number?
- Diana Coulson's National Provider Identifier (NPI) is 1720286602, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Coulson's specialty?
- Diana Coulson is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Coulson located?
- Diana Coulson's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Diana Coulson's phone number?
- The practice phone number listed in the NPPES registry for Diana Coulson is (909) 427-3910.
- Does Diana Coulson accept Medicare?
- Diana Coulson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Coulson's NPI active?
- Yes — Diana Coulson's NPI (1720286602) is active in the NPPES registry as of the last update on 2021-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.