Christopher Simmons, M.D.
NPI 1083630081 · Internal Medicine Physician · Lafayette, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Simmons, M.D. is a Internal Medicine Physician provider in Lafayette, CA (NPI 1083630081).
Provider details
- NPI number
- 1083630081
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A52899 (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
1,415 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 723 | $153 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 269 | $108 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 124 | $18 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 88 | $157 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 72 | $70 |
| Administration of Influenza Virus Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 444 | 119 |
| Levothyroxine Sodium | 252 | 60 |
| Amlodipine Besylate | 217 | 54 |
| Apixabanbrand: Eliquis | 174 | 38 |
| Atorvastatin Calcium | 136 | 42 |
| Metoprolol Succinate | 134 | 35 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (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
- 2006-07-14
- Last updated
- 2012-06-21
Frequently asked questions
- What is Christopher Simmons's NPI number?
- Christopher Simmons's National Provider Identifier (NPI) is 1083630081, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Simmons's specialty?
- Christopher Simmons is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Simmons located?
- Christopher Simmons's practice location on file with NPPES is 3466 Mt Diablo Blvd, Lafayette, CA 94549-7106.
- What is Christopher Simmons's phone number?
- The practice phone number listed in the NPPES registry for Christopher Simmons is (925) 284-4442.
- Does Christopher Simmons accept Medicare?
- Christopher Simmons is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Simmons's NPI active?
- Yes — Christopher Simmons's NPI (1083630081) is active in the NPPES registry as of the last update on 2012-06-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.