Timothy Parenteau, MD, PHD
NPI 1790272599 · Geriatric Medicine (Internal Medicine) Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Parenteau, MD, PHD is a Geriatric Medicine (Internal Medicine) Physician provider in Oakland, CA (NPI 1790272599).
Provider details
- NPI number
- 1790272599
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- A167098 (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
8 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
46 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 32 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 14 | $88 |
Typical Medicare-allowed amounts for these services range $88–$132 (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 · 25 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Gabapentin | 80 |
| Baclofen | 72 |
| Metformin Hcl | 50 |
| Quetiapine Fumarate | 46 |
| Furosemide | 37 |
| Metoprolol Tartrate | 32 |
| Atorvastatin Calcium | 29 |
| Levothyroxine Sodium | 28 |
| Sertraline Hcl | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-04-17
- Last updated
- 2025-08-08
- Certified
- 2025-08-08
Frequently asked questions
- What is Timothy Parenteau's NPI number?
- Timothy Parenteau's National Provider Identifier (NPI) is 1790272599, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Parenteau's specialty?
- Timothy Parenteau is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Parenteau located?
- Timothy Parenteau's practice location on file with NPPES is 3300 Webster St Ste 1106, Oakland, CA 94609-3125.
- What is Timothy Parenteau's phone number?
- The practice phone number listed in the NPPES registry for Timothy Parenteau is (510) 817-2000.
- Does Timothy Parenteau accept Medicare?
- Timothy Parenteau is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Parenteau's NPI active?
- Yes — Timothy Parenteau's NPI (1790272599) is active in the NPPES registry as of the last update on 2025-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.