Amy Grzysiewicz, D.O.
NPI 1558521807 · Family Medicine Physician · Portland, ME
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amy Grzysiewicz, D.O. is a Family Medicine Physician provider in Portland, ME (NPI 1558521807).
Provider details
- NPI number
- 1558521807
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 2232 (ME)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
795 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 | 165 | $109 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 119 | $7 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 88 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 66 | $13 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 59 | $87 |
| Vitamin D-3 Level82306 | 38 | $29 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 169 | 53 |
| Lisinopril | 137 | 44 |
| Levothyroxine Sodium | 114 | 41 |
| Amlodipine Besylate | 102 | 29 |
| Omeprazole | 100 | 24 |
| Losartan Potassium | 83 | 27 |
| Simvastatin | 73 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-11
- Last updated
- 2023-03-01
- Certified
- 2023-03-01
Frequently asked questions
- What is Amy Grzysiewicz's NPI number?
- Amy Grzysiewicz's National Provider Identifier (NPI) is 1558521807, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amy Grzysiewicz's specialty?
- Amy Grzysiewicz is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Amy Grzysiewicz located?
- Amy Grzysiewicz's practice location on file with NPPES is 331 Veranda St, Portland, ME 04103-5545.
- What is Amy Grzysiewicz's phone number?
- The practice phone number listed in the NPPES registry for Amy Grzysiewicz is (072) 828-2402.
- Does Amy Grzysiewicz accept Medicare?
- Amy Grzysiewicz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amy Grzysiewicz's NPI active?
- Yes — Amy Grzysiewicz's NPI (1558521807) is active in the NPPES registry as of the last update on 2023-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.