2026 NPPES data Physician Assistant NPI 1710577911
Verify on CMS →

JOSHUA GRZYB

Physician Assistant in BIDDEFORD, 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
252
Medicare Part D claims · 136 beneficiaries · Physician Assistant avg: 790
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
98.0699/100
▲ 15 pts above national avg 83.1 · [object Object]

What the federal data shows

JOSHUA GRZYB reported a CMS MIPS final score of 98.0699/100 — above the 83.1 national average — and filed 252 Medicare Part D claims in 2023.

98.0699/100
MIPS score · +15 vs avg
252
Part D claims, 2023
96%
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.

JOSHUA GRZYB's MIPS score vs every scored U.S. clinician

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

98 Top 11% higher than 89% 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 JOSHUA GRZYB?

High performer (top quartile)

NPI registry status

Active

Issued 01/21/2021

NPI 1710577911

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

252 68% vs specialty avg

2023 prescription claims

Specialty avg: 790

MIPS final score

98.0699/100 14.96990000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Maine

How Physician Assistant compares to other specialties among Maine providers

Maine providers

Physician Assistant share within Maine

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within Maine

Medicare quality performance — MIPS

JOSHUA GRZYB's 2023 MIPS final score plotted against the Physician Assistant national average

High performer (top quartile)
MIPS Final Score
98.0699/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Physician Assistant) — 98.0699/100 vs national avg 83.1

0%100%National avg83%98.1%
MIPS final score (Physician Assistant) — 98.0699/100 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).

JOSHUA GRZYB appears in the CMS NPPES registry as a Physician Assistant provider at 1 MEDICAL CENTER DR, BIDDEFORD, ME, 04005, with a listed phone of (207) 294-5000. NPI 1710577911 was issued on 01/21/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRZYB 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 252 prescription claims written by this provider, covering 136 Medicare beneficiaries and totaling roughly $8K in drug spend, split 4% brand-name and 96% generic by claim count, with an opioid prescribing rate of 13.1%. 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 98.0699/100 for the 2023 performance year (Quality 86.1398), compared with the national average of 83.1.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

1 MEDICAL CENTER DR
BIDDEFORD, ME 04005

Provider Details

NPI 1710577911
Specialty Physician Assistant
Gender Male
NPI Issued 01/21/2021

CMS Quality Score (MIPS)

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

98.0699
Final Score
Avg: 83.1
86.1398
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where JOSHUA GRZYB 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.

MAINE MEDICAL CONSULTANTS PC
PORTLAND, ME
PAI PARTICIPANT 7 PC
FALMOUTH, 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 · Generic-heavy

JOSHUA GRZYB — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 252 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.

252
Total Claims
$8K
Total Drug Cost
136
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
255
Total Day Supply
3,899
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$4K
Generic Drug Cost
$4K
Opioid Claims
33 (13.1% rate)
Antibiotic Claims
56

Patient Demographics

Average Patient Age
70.7 years
Avg HCC Risk Score
1.77
Gender Split
63% female / 37% male
Age Distribution
<65: 36, 65-74: 48, 75-84: 35, 85+: 17

Top Prescribed Drugs (Medicare Part D)

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

What JOSHUA GRZYB 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
Prednisone
23
Ondansetron Odt
Ondansetron
16
Gabapentin
15
Cefdinir
14
Oxycodone Hcl
14

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

Physician Assistant Overview

How JOSHUA GRZYB fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

JOSHUA GRZYB's 252 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Maine

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

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOSHUA GRZYB's specialty?
JOSHUA GRZYB specializes in Physician Assistant and practices in BIDDEFORD, Maine.
How much does JOSHUA GRZYB prescribe under Medicare Part D?
In 2023, JOSHUA GRZYB wrote 252 Medicare Part D claims totaling $8K in drug costs for 136 beneficiaries.
What is JOSHUA GRZYB's Medicare quality score?
JOSHUA GRZYB has a CMS MIPS Final Score of 98.0699/100 (Quality: 86.1398). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOSHUA GRZYB located?
JOSHUA GRZYB is located at 1 MEDICAL CENTER DR, BIDDEFORD, ME, 04005. Phone: (207) 294-5000.
What is JOSHUA GRZYB's NPI number?
JOSHUA GRZYB's National Provider Identifier (NPI) is 1710577911, issued on 01/21/2021.
Does JOSHUA GRZYB prescribe more brand-name or generic drugs?
JOSHUA GRZYB's prescribing is 4% brand-name and 96% generic drugs by claim count, with $4K in brand drug costs.
Does JOSHUA GRZYB prescribe opioids?
Yes, JOSHUA GRZYB had 33 opioid claims in 2023 with an opioid prescribing rate of 13.1%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does JOSHUA GRZYB prescribe most often?
Based on 2023 Medicare Part D data, JOSHUA GRZYB's most frequently prescribed drugs include Prednisone, Ondansetron Odt, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOSHUA GRZYB accept Medicare?
JOSHUA GRZYB appears in CMS Medicare data with 252 Part D claims and 136 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOSHUA GRZYB's credentials?
JOSHUA GRZYB's NPI is 1710577911. 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