Timothy Monahan, M.D.
NPI 1154321974 · Dermatology Physician · Danielson, CT
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Monahan, M.D. is a Dermatology Physician provider in Danielson, CT (NPI 1154321974).
Provider details
- NPI number
- 1154321974
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 56318 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
2,639 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,043 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 483 | $94 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 357 | $66 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 187 | $132 |
| Biopsy of Related Skin Growth, First Growth11102 | 140 | $106 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,984 across 119 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
- 2005-07-22
- Last updated
- 2010-04-28
Frequently asked questions
- What is Timothy Monahan's NPI number?
- Timothy Monahan's National Provider Identifier (NPI) is 1154321974, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Monahan's specialty?
- Timothy Monahan is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Monahan located?
- Timothy Monahan's practice location on file with NPPES is 55 Green Hollow Rd, Danielson, CT 06239-3533.
- What is Timothy Monahan's phone number?
- The practice phone number listed in the NPPES registry for Timothy Monahan is (860) 779-1865.
- Does Timothy Monahan accept Medicare?
- Timothy Monahan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Monahan's NPI active?
- Yes — Timothy Monahan's NPI (1154321974) is active in the NPPES registry as of the last update on 2010-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.