Jennifer Grimmer, FNP
NPI 1821303140 · Nurse Practitioner · Buffalo, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Grimmer, FNP is a Nurse Practitioner provider in Buffalo, NY (NPI 1821303140).
Provider details
- NPI number
- 1821303140
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- F336343 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
15 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
46 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 34 | $115 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 12 | $78 |
Typical Medicare-allowed amounts for these services range $78–$115 (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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 276 | 93 |
| Duloxetine Hcl | 182 | 55 |
| Oxycodone Hcl | 168 | 69 |
| Methadone Hcl | 134 | 44 |
| Lidocaine | 104 | 46 |
| Pregabalin | 76 | 23 |
| Baclofen | 51 | 22 |
| Oxcarbazepine |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-08-11
- Last updated
- 2021-01-13
- Certified
- 2021-01-13
Frequently asked questions
- What is Jennifer Grimmer's NPI number?
- Jennifer Grimmer's National Provider Identifier (NPI) is 1821303140, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Grimmer's specialty?
- Jennifer Grimmer is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jennifer Grimmer located?
- Jennifer Grimmer's practice location on file with NPPES is Elm and Carlton Streets, Buffalo, NY 14263.
- What is Jennifer Grimmer's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Grimmer is (716) 845-2300.
- Does Jennifer Grimmer accept Medicare?
- Jennifer Grimmer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Grimmer's NPI active?
- Yes — Jennifer Grimmer's NPI (1821303140) is active in the NPPES registry as of the last update on 2021-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.