Daniel Fields, M.D.
NPI 1801907308 · Family Medicine Physician · Plymouth, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Fields, M.D. is a Family Medicine Physician provider in Plymouth, CA (NPI 1801907308).
Provider details
- NPI number
- 1801907308
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G42280 (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
130 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 | 72 | $93 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 58 | $129 |
Typical Medicare-allowed amounts for these services range $93–$129 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 138 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 869 | 271 |
| Levothyroxine Sodium | 401 | 100 |
| Amlodipine Besylate | 361 | 106 |
| Lisinopril | 301 | 86 |
| Metformin Hclbrand: Metformin Hcl Er | 267 | 86 |
| Gabapentin | 225 | 70 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2015-07-28
Frequently asked questions
- What is Daniel Fields's NPI number?
- Daniel Fields's National Provider Identifier (NPI) is 1801907308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Fields's specialty?
- Daniel Fields is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Daniel Fields located?
- Daniel Fields's practice location on file with NPPES is 9279 Locust, Plymouth, CA 95669.
- What is Daniel Fields's phone number?
- The practice phone number listed in the NPPES registry for Daniel Fields is (209) 245-6968.
- Does Daniel Fields accept Medicare?
- Daniel Fields is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Fields's NPI active?
- Yes — Daniel Fields's NPI (1801907308) is active in the NPPES registry as of the last update on 2015-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.