Allyson Underwood, FNP-BC
NPI 1639302250 · Family Nurse Practitioner · Marietta, GA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allyson Underwood, FNP-BC is a Family Nurse Practitioner provider in Marietta, GA (NPI 1639302250).
Provider details
- NPI number
- 1639302250
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-BC
- Sex
- Female
- Sole proprietor
- No
- License
- RN177114 (GA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 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
507 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 | 277 | $110 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 159 | $14 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 31 | $12 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 23 | $77 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 17 | $147 |
Typical Medicare-allowed amounts for these services range $12–$147 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 318 | 148 |
| Hydroxychloroquine Sulfate | 298 | 122 |
| Methotrexate Sodiumbrand: Methotrexate | 189 | 85 |
| Duloxetine Hcl | 118 | 51 |
| Leflunomide | 98 | 48 |
| Gabapentin | 89 | 46 |
| Celecoxib | 76 | 35 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,700 across 81 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
- 2009-08-30
- Last updated
- 2019-03-12
Frequently asked questions
- What is Allyson Underwood's NPI number?
- Allyson Underwood's National Provider Identifier (NPI) is 1639302250, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allyson Underwood's specialty?
- Allyson Underwood is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Allyson Underwood located?
- Allyson Underwood's practice location on file with NPPES is 700 Church St Ne, Marietta, GA 30060-7220.
- What is Allyson Underwood's phone number?
- The practice phone number listed in the NPPES registry for Allyson Underwood is (770) 420-1690.
- Does Allyson Underwood accept Medicare?
- Allyson Underwood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allyson Underwood's NPI active?
- Yes — Allyson Underwood's NPI (1639302250) is active in the NPPES registry as of the last update on 2019-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.