Douglas Severance, M.D.
NPI 1639289838 · Family Medicine Physician · San Ramon, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Severance, M.D. is a Family Medicine Physician provider in San Ramon, CA (NPI 1639289838).
Provider details
- NPI number
- 1639289838
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G35610 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,992 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 996 | $102 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 390 | $147 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 310 | $156 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 303 | $18 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 206 | $24 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 119 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 844 | 220 |
| Lisinopril | 396 | 101 |
| Amlodipine Besylate | 343 | 96 |
| Losartan Potassium | 274 | 77 |
| Rosuvastatin Calcium | 263 | 81 |
| Levothyroxine Sodium | 262 | 68 |
| Zolpidem Tartrate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,222 across 105 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2010-08-13
Frequently asked questions
- What is Douglas Severance's NPI number?
- Douglas Severance's National Provider Identifier (NPI) is 1639289838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Severance's specialty?
- Douglas Severance is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Severance located?
- Douglas Severance's practice location on file with NPPES is 5601 Norris Canyon Rd, San Ramon, CA 94583-5407.
- What is Douglas Severance's phone number?
- The practice phone number listed in the NPPES registry for Douglas Severance is (925) 275-0400.
- Does Douglas Severance accept Medicare?
- Douglas Severance is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Severance's NPI active?
- Yes — Douglas Severance's NPI (1639289838) is active in the NPPES registry as of the last update on 2010-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.