Thomas Bertolli, M.D.
NPI 1811089717 · Family Medicine Physician · Laytonville, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Thomas Bertolli, M.D. is a Family Medicine Physician provider in Laytonville, CA (NPI 1811089717).
Provider details
- NPI number
- 1811089717
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A38824 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
149 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 59 | $10 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 49 | $3 |
| X-Ray of Chest, 2 Views71046 | 16 | $24 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 13 | $6 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 12 | $10 |
Typical Medicare-allowed amounts for these services range $3–$24 (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 · 70 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 205 | 79 |
| Diclofenac Sodium | 150 | 52 |
| Gabapentin | 135 | 43 |
| Tamsulosin Hcl | 122 | 38 |
| Buprenorphine | 105 | 24 |
| Levothyroxine Sodium | 81 | 31 |
| Amlodipine Besylate | 79 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 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
Additional practice locations (1)
- 46900 Ocean DrGualala, CA 95445-8353Phone: (707) 884-4005Fax: (707) 884-9728
Registry dates
- Enumerated
- 2006-09-28
- Last updated
- 2018-03-17
Frequently asked questions
- What is Thomas Bertolli's NPI number?
- Thomas Bertolli's National Provider Identifier (NPI) is 1811089717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Bertolli's specialty?
- Thomas Bertolli is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Bertolli located?
- Thomas Bertolli's practice location on file with NPPES is 50 Branscomb Road, Laytonville, CA 95454.
- What is Thomas Bertolli's phone number?
- The practice phone number listed in the NPPES registry for Thomas Bertolli is (707) 984-6131.
- Does Thomas Bertolli accept Medicare?
- Thomas Bertolli is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Thomas Bertolli's NPI active?
- Yes — Thomas Bertolli's NPI (1811089717) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.