Mary Warzynski, NP
NPI 1316909013 · Nurse Practitioner · Chestnut Hill, MA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Warzynski, NP is a Nurse Practitioner provider in Chestnut Hill, MA (NPI 1316909013).
Provider details
- NPI number
- 1316909013
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 200847 (MA)
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
20 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
99 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 64 | $9 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 19 | $16 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 16 | $6 |
Typical Medicare-allowed amounts for these services range $6–$16 (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 · 52 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lorazepam | 97 | 52 |
| Levothyroxine Sodium | 85 | 37 |
| Clonazepam | 82 | 32 |
| Alendronate Sodium | 75 | 25 |
| Sertraline Hcl | 75 | 36 |
| Gabapentin | 63 | 35 |
| Oxycodone Hcl | 51 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-06
- Last updated
- 2019-10-21
Frequently asked questions
- What is Mary Warzynski's NPI number?
- Mary Warzynski's National Provider Identifier (NPI) is 1316909013, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Warzynski's specialty?
- Mary Warzynski is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Warzynski located?
- Mary Warzynski's practice location on file with NPPES is 291 Independence Dr, Chestnut Hill, MA 02467-3628.
- What is Mary Warzynski's phone number?
- The practice phone number listed in the NPPES registry for Mary Warzynski is (617) 325-2800.
- Does Mary Warzynski accept Medicare?
- Mary Warzynski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Warzynski's NPI active?
- Yes — Mary Warzynski's NPI (1316909013) is active in the NPPES registry as of the last update on 2019-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.