Wendy Griswold, APRN
NPI 1639406184 · Family Nurse Practitioner · Portland, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wendy Griswold, APRN is a Family Nurse Practitioner provider in Portland, CT (NPI 1639406184).
Provider details
- NPI number
- 1639406184
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- No
- License
- 004197 (CT)
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 tenure28% of score
16 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
264 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 137 | $117 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 57 | $80 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 32 | $121 |
| Administration of Influenza Virus VaccineG0008 | 21 | $34 |
| Admn Sarscov2 Vacc 1 Dose90480 | 17 | $43 |
Typical Medicare-allowed amounts for these services range $34–$121 (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 · 58 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 326 | 81 |
| Levothyroxine Sodium | 192 | 50 |
| Lisinopril | 155 | 41 |
| Amlodipine Besylate | 152 | 40 |
| Rosuvastatin Calcium | 114 | 29 |
| Metoprolol Succinate | 87 | 20 |
| Trazodone Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-11-04
- Last updated
- 2017-04-12
Frequently asked questions
- What is Wendy Griswold's NPI number?
- Wendy Griswold's National Provider Identifier (NPI) is 1639406184, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wendy Griswold's specialty?
- Wendy Griswold is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Wendy Griswold located?
- Wendy Griswold's practice location on file with NPPES is 270 Main St, Portland, CT 06480-1857.
- What is Wendy Griswold's phone number?
- The practice phone number listed in the NPPES registry for Wendy Griswold is (860) 342-3392.
- Does Wendy Griswold accept Medicare?
- Wendy Griswold is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wendy Griswold's NPI active?
- Yes — Wendy Griswold's NPI (1639406184) is active in the NPPES registry as of the last update on 2017-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.