2026 NPPES data Nurse Practitioner NPI 1548696560 NP
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TAMMY MAHER, NP

Nurse Practitioner in ROCHESTER, New York. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
340
Medicare Part D claims · 105 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
95.1965/100
▲ 12 pts above national avg 83.1 · [object Object]

What the federal data shows

TAMMY MAHER, NP reported a CMS MIPS final score of 95.1965/100 — above the 83.1 national average — and filed 340 Medicare Part D claims in 2023.

95.1965/100
MIPS score · +12 vs avg
340
Part D claims, 2023
81%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

TAMMY MAHER, NP's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

95 Top 21% higher than 79% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about TAMMY MAHER, NP?

High performer (top quartile)

NPI registry status

Active

Issued 09/23/2013

NPI 1548696560

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

340 69% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

MIPS final score

95.1965/100 12.096500000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in New York

How Nurse Practitioner compares to other specialties among New York providers

New York providers

Nurse Practitioner share within New York

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within New York

Medicare quality performance — MIPS

TAMMY MAHER, NP's 2023 MIPS final score plotted against the Nurse Practitioner national average

High performer (top quartile)
MIPS Final Score
95.1965/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nurse Practitioner) — 95.1965/100 vs national avg 83.1

0%100%National avg83%95.2%
MIPS final score (Nurse Practitioner) — 95.1965/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

TAMMY MAHER, NP appears in the CMS NPPES registry as a Nurse Practitioner provider holding NP credentials at 1425 PORTLAND AVE, ROCHESTER, NY, 14621, with a listed phone of (585) 922-4227. NPI 1548696560 was issued on 09/23/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MAHER most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 340 prescription claims written by this provider, covering 105 Medicare beneficiaries and totaling roughly $53K in drug spend, split 19% brand-name and 81% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 95.1965/100 for the 2023 performance year (Quality 70.6225), compared with the national average of 83.1.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1425 PORTLAND AVE
ROCHESTER, NY 14621

Provider Details

NPI 1548696560
Specialty Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 09/23/2013

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

95.1965
Final Score
Avg: 83.1
70.6225
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where TAMMY MAHER, NP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

ROCHESTER GENERAL HOSPITAL
★★☆☆☆ 2/5
ROCHESTER, NY
Acute Care Hospitals
CMS CCN: 330125

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — New York NYSBPMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~100K New York medical licensees in 2023 — they are NOT specific to TAMMY MAHER, NP. To verify TAMMY MAHER, NP's current license status, search the NYSBPMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

312
Total board actions, New York 2023
Across 302 cases
3.12
Actions per 1,000 licensees
New York statewide rate
probation
Most common action type
89 cases

NYSBPMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the New York disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

TAMMY MAHER, NP — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 340 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

340
Total Claims
$53K
Total Drug Cost
105
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
630
Total Day Supply
17,511
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$48K
Generic Drug Cost
$5K
Antibiotic Claims
19

Patient Demographics

Average Patient Age
80.1 years
Avg HCC Risk Score
2.55
Gender Split
54% female / 46% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What TAMMY MAHER, NP prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Torsemide
51
Furosemide
35
Spironolactone
27
Amlodipine Besylate
16
Metolazone
16
Carvedilol
13
Atorvastatin Calcium
12
Potassium Chloride
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Nurse Practitioner Overview

How TAMMY MAHER, NP fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

TAMMY MAHER, NP's 340 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in New York

Other clinicians with the same primary specialty enrolled in New York, drawn from the same CMS NPPES roster as MAHER.

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is TAMMY MAHER, NP's specialty?
TAMMY MAHER, NP specializes in Nurse Practitioner and practices in ROCHESTER, New York. Credentials: NP.
How much does TAMMY MAHER, NP prescribe under Medicare Part D?
In 2023, TAMMY MAHER, NP wrote 340 Medicare Part D claims totaling $53K in drug costs for 105 beneficiaries.
What is TAMMY MAHER, NP's Medicare quality score?
TAMMY MAHER, NP has a CMS MIPS Final Score of 95.1965/100 (Quality: 70.6225). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is TAMMY MAHER, NP located?
TAMMY MAHER, NP is located at 1425 PORTLAND AVE, ROCHESTER, NY, 14621. Phone: (585) 922-4227.
What is TAMMY MAHER, NP's NPI number?
TAMMY MAHER, NP's National Provider Identifier (NPI) is 1548696560, issued on 09/23/2013.
Does TAMMY MAHER, NP prescribe more brand-name or generic drugs?
TAMMY MAHER, NP's prescribing is 19% brand-name and 81% generic drugs by claim count, with $48K in brand drug costs.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does TAMMY MAHER, NP prescribe most often?
Based on 2023 Medicare Part D data, TAMMY MAHER, NP's most frequently prescribed drugs include Torsemide, Furosemide, Spironolactone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TAMMY MAHER, NP accept Medicare?
TAMMY MAHER, NP appears in CMS Medicare data with 340 Part D claims and 105 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TAMMY MAHER, NP's credentials?
TAMMY MAHER, NP's NPI is 1548696560 with credentials NP. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology