Tammy Underwood, FNP-C
NPI 1902587405 · Family Medicine Physician · Claysville, PA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Underwood, FNP-C is a Family Medicine Physician provider in Claysville, PA (NPI 1902587405).
Provider details
- NPI number
- 1902587405
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- FNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- SP027909 (PA)
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
2 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
174 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 | 107 | $102 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 46 | $72 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 21 | $14 |
Typical Medicare-allowed amounts for these services range $14–$102 (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 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 138 | 25 |
| Atorvastatin Calcium | 137 | 36 |
| Lisinopril | 98 | 27 |
| Levothyroxine Sodium | 90 | 22 |
| Metformin Hcl | 88 | 24 |
| Pantoprazole Sodium | 84 | 21 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$566 across 22 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
- 2023-07-27
- Last updated
- 2023-07-27
- Certified
- 2023-07-27
Frequently asked questions
- What is Tammy Underwood's NPI number?
- Tammy Underwood's National Provider Identifier (NPI) is 1902587405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Underwood's specialty?
- Tammy Underwood is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tammy Underwood located?
- Tammy Underwood's practice location on file with NPPES is 1263 Route 40 W, Claysville, PA 15323-1277.
- What is Tammy Underwood's phone number?
- The practice phone number listed in the NPPES registry for Tammy Underwood is (724) 663-7731.
- Does Tammy Underwood accept Medicare?
- Tammy Underwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Underwood's NPI active?
- Yes — Tammy Underwood's NPI (1902587405) is active in the NPPES registry as of the last update on 2023-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.