2026 NPPES data Family Nurse Practitioner NPI 1487022398 APRN, FNP
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GREGORY BATES, APRN, FNP

Family Nurse Practitioner in NORWAY, Maine. 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
5K
Medicare Part D claims · 482 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

GREGORY BATES, APRN, FNP filed 4,516 Medicare Part D claims in 2023 as a Family Nurse Practitioner in NORWAY, Maine, prescribing 89% generic.

5K
Part D claims, 2023
89%
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.

GREGORY BATES, APRN, FNP's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

4,516 Top 7% higher than 93% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about GREGORY BATES, APRN, FNP?

Quality data not reported

NPI registry status

Active

Issued 09/09/2015

NPI 1487022398

Primary specialty

Family Nurse Practitioner

High-volume

209,817 US NPIs in this specialty

Medicare Part D claims

4,516 270% vs specialty avg

2023 prescription claims

Specialty avg: 1,222

Specialty distribution in Maine

How Family Nurse Practitioner compares to other specialties among Maine providers

Maine providers

Family Nurse Practitioner share within Maine

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

Specialty board-certification context

Estimated specialty board-certified rate — Family Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Family Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Nurse Practitioner) — ABMS / AOA estimate

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).

GREGORY BATES, APRN, FNP appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding APRN, FNP credentials at 193 MAIN ST, NORWAY, ME, 04268, with a listed phone of (207) 743-9292. NPI 1487022398 was issued on 09/09/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BATES 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 4,516 prescription claims written by this provider, covering 482 Medicare beneficiaries and totaling roughly $445K in drug spend, split 11% brand-name and 89% generic by claim count, with an opioid prescribing rate of 3.7%. 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.

Family Nurse Practitioner is a high-volume specialty nationwide, with 209,817 enrolled providers across 56 states and an average of 1,222 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

193 MAIN ST
NORWAY, ME 04268

Provider Details

NPI 1487022398
Specialty Family Nurse Practitioner
Credentials APRN, FNP
Gender Male
NPI Issued 09/09/2015

Hospital and facility affiliations

Facilities where GREGORY BATES, APRN, FNP 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.

MERCY HOSPITAL
WINDHAM, ME

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

Brand vs generic prescribing mix · Typical

GREGORY BATES, APRN, FNP — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 4,516 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.

4,516
Total Claims
$445K
Total Drug Cost
482
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,605
Total Day Supply
310,479
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$340K
Generic Drug Cost
$105K
Opioid Claims
169 (3.7% rate)
Antibiotic Claims
42

Patient Demographics

Average Patient Age
70.9 years
Avg HCC Risk Score
1.11
Gender Split
49% female / 51% male
Age Distribution
<65: 89, 65-74: 216, 75-84: 140, 85+: 37

Top Prescribed Drugs (Medicare Part D)

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

What GREGORY BATES, APRN, FNP 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
Atorvastatin Calcium
310
Lisinopril
232
Amlodipine Besylate
180
Omeprazole
179
Levothyroxine Sodium
150
Simvastatin
132
Metformin Hcl
117
Hydrochlorothiazide
114
Gabapentin
98
Metoprolol Succinate
94

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

Family Nurse Practitioner Overview

How GREGORY BATES, APRN, FNP fits within the Family Nurse Practitioner landscape nationally.

209,817
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider

GREGORY BATES, APRN, FNP's 4,516 claims are above the specialty average of 1,222.

Nearby Family Nurse Practitioner Providers in Maine

Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as BATES.

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

Frequently Asked Questions

What is GREGORY BATES, APRN, FNP's specialty?
GREGORY BATES, APRN, FNP specializes in Family Nurse Practitioner and practices in NORWAY, Maine. Credentials: APRN, FNP.
How much does GREGORY BATES, APRN, FNP prescribe under Medicare Part D?
In 2023, GREGORY BATES, APRN, FNP wrote 4,516 Medicare Part D claims totaling $445K in drug costs for 482 beneficiaries.
Where is GREGORY BATES, APRN, FNP located?
GREGORY BATES, APRN, FNP is located at 193 MAIN ST, NORWAY, ME, 04268. Phone: (207) 743-9292.
What is GREGORY BATES, APRN, FNP's NPI number?
GREGORY BATES, APRN, FNP's National Provider Identifier (NPI) is 1487022398, issued on 09/09/2015.
Does GREGORY BATES, APRN, FNP prescribe more brand-name or generic drugs?
GREGORY BATES, APRN, FNP's prescribing is 11% brand-name and 89% generic drugs by claim count, with $340K in brand drug costs.
Does GREGORY BATES, APRN, FNP prescribe opioids?
Yes, GREGORY BATES, APRN, FNP had 169 opioid claims in 2023 with an opioid prescribing rate of 3.7%.
How many Family Nurse Practitioner providers are there in the US?
There are 209,817 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does GREGORY BATES, APRN, FNP prescribe most often?
Based on 2023 Medicare Part D data, GREGORY BATES, APRN, FNP's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY BATES, APRN, FNP accept Medicare?
GREGORY BATES, APRN, FNP appears in CMS Medicare data with 4,516 Part D claims and 482 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY BATES, APRN, FNP's credentials?
GREGORY BATES, APRN, FNP's NPI is 1487022398 with credentials APRN, FNP. 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.
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