James Hopkins, D.O.
NPI 1851401830 · Emergency Medical Services (Emergency Medicine) Physician · Martinez, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Hopkins, D.O. is a Emergency Medical Services (Emergency Medicine) Physician provider in Martinez, CA (NPI 1851401830).
Provider details
- NPI number
- 1851401830
- Entity type
- Individual
- Primary specialty
- Emergency Medical Services (Emergency Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A5829 (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
108 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 61 | $179 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 47 | $123 |
Typical Medicare-allowed amounts for these services range $123–$179 (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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ibuprofen | 76 | 75 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 54 | 54 |
| Ondansetronbrand: Ondansetron Odt | 53 | 53 |
| Cefpodoxime Proxetil | 38 | 37 |
| Dexamethasone | 35 | 32 |
| Tizanidine Hcl | 35 | 35 |
| Doxycycline Monohydrate | 28 | 28 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2022-02-11
Frequently asked questions
- What is James Hopkins's NPI number?
- James Hopkins's National Provider Identifier (NPI) is 1851401830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Hopkins's specialty?
- James Hopkins is listed in the NPPES registry with a primary specialty of Emergency Medical Services (Emergency Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is James Hopkins located?
- James Hopkins's practice location on file with NPPES is 102 Stonehurst Ct, Martinez, CA 94553-9648.
- What is James Hopkins's phone number?
- The practice phone number listed in the NPPES registry for James Hopkins is (925) 229-4273.
- Does James Hopkins accept Medicare?
- James Hopkins is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Hopkins's NPI active?
- Yes — James Hopkins's NPI (1851401830) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.