2026 NPPES data Ophthalmology Physician NPI 1770597189 MD
Verify on CMS →

ALLEN GREY, MD

Ophthalmology Physician in GRAND JUNCTION, Colorado. 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
1K
Medicare Part D claims · 278 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
71%
generic claims · 29% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · [object Object]

What the federal data shows

ALLEN GREY, MD reported a CMS MIPS final score of 0/100 — below the 83.1 national average — and filed 1,454 Medicare Part D claims in 2023.

0/100
MIPS score · -83 vs avg
1K
Part D claims, 2023
71%
generic prescribing
Likely
board-certified (heuristic)

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.

ALLEN GREY, MD's MIPS score vs every scored U.S. clinician

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

0 0th percentile higher than 0% of 477,587 scored providers

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

Board certification likely (heuristic — not verified)

ALLEN GREY, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about ALLEN GREY, MD?

Below national average

NPI registry status

Active

Issued 07/28/2006

NPI 1770597189

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,454 2% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

0/100 83.1% pts

Penalty band band

vs 83.1 national avg

Specialty distribution in Colorado

How Ophthalmology Physician compares to other specialties among Colorado providers

Colorado providers

Ophthalmology Physician share within Colorado

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Colorado

Medicare quality performance — MIPS

ALLEN GREY, MD's 2023 MIPS final score plotted against the Ophthalmology Physician national average

Below national average
MIPS Final Score
0/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 0/100 vs national avg 83.1

0%100%National avg83%0%
MIPS final score (Ophthalmology Physician) — 0/100 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).

ALLEN GREY, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 1120 WELLINGTON AVE, GRAND JUNCTION, CO, 81501, with a listed phone of (970) 242-8812. NPI 1770597189 was issued on 07/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GREY 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 1,454 prescription claims written by this provider, covering 278 Medicare beneficiaries and totaling roughly $703K in drug spend, split 29% brand-name and 71% 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 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

1120 WELLINGTON AVE
GRAND JUNCTION, CO 81501

Provider Details

NPI 1770597189
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 07/28/2006

CMS Quality Score (MIPS)

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

0
Final Score
Avg: 83.1
0
Quality

Reporting: Individual

Brand vs generic prescribing mix · Above average

ALLEN GREY, MD — brand share 29.0%
Specialty average (est.)

29% brand-name claims vs 71% generic, on 1,454 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.

1,454
Total Claims
$703K
Total Drug Cost
278
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,493
Total Day Supply
71,049
Brand vs Generic
29% brand / 71% generic
Brand Drug Cost
$670K
Generic Drug Cost
$33K

Patient Demographics

Average Patient Age
78.2 years
Avg HCC Risk Score
1.22
Gender Split
68% female / 32% male

Top Prescribed Drugs (Medicare Part D)

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

What ALLEN GREY, MD 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
Latanoprost
679
Timolol Maleate
185
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
66
Brimonidine Tartrate
64
Lumigan
Bimatoprost
54
Dorzolamide Hcl
51
Acyclovir
30
Alphagan P
Brimonidine Tartrate
30
Erythromycin
Erythromycin Base
30
Ketorolac Tromethamine
30

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

Ophthalmology Physician Overview

How ALLEN GREY, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

ALLEN GREY, MD's 1,454 claims are above the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Colorado

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

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

Frequently Asked Questions

What is ALLEN GREY, MD's specialty?
ALLEN GREY, MD specializes in Ophthalmology Physician and practices in GRAND JUNCTION, Colorado. Credentials: MD.
How much does ALLEN GREY, MD prescribe under Medicare Part D?
In 2023, ALLEN GREY, MD wrote 1,454 Medicare Part D claims totaling $703K in drug costs for 278 beneficiaries.
What is ALLEN GREY, MD's Medicare quality score?
ALLEN GREY, MD has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ALLEN GREY, MD located?
ALLEN GREY, MD is located at 1120 WELLINGTON AVE, GRAND JUNCTION, CO, 81501. Phone: (970) 242-8812.
What is ALLEN GREY, MD's NPI number?
ALLEN GREY, MD's National Provider Identifier (NPI) is 1770597189, issued on 07/28/2006.
Does ALLEN GREY, MD prescribe more brand-name or generic drugs?
ALLEN GREY, MD's prescribing is 29% brand-name and 71% generic drugs by claim count, with $670K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does ALLEN GREY, MD prescribe most often?
Based on 2023 Medicare Part D data, ALLEN GREY, MD's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALLEN GREY, MD accept Medicare?
ALLEN GREY, MD appears in CMS Medicare data with 1,454 Part D claims and 278 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALLEN GREY, MD's credentials?
ALLEN GREY, MD's NPI is 1770597189 with credentials MD. 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