NPI registry status
Active
2026 NPPES data Optometrist NPI 1720077043 O.D.
Verify on CMS → Gregory Abel, O.D.
Optometrist in Ft Collins, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 61,426 in Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
160
Medicare Part D claims · 33 beneficiaries · Optometrist avg: 279
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Gregory Abel, O.D. filed 160 Medicare Part D claims in 2024 as an Optometrist in Ft Collins, Colorado, prescribing 76% generic.
- 160
- Part D claims, 2024
- 76%
- generic prescribing
- ≥34th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Gregory Abel, O.D.
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1720077043), first enumerated 10/19/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 160 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1720077043 · Optometrist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1720077043
- ENUM-LEGACY 2005
- TAX-MEGA 61K Optometrist
- RX-LIGHT 160
- BOOK-LIGHT 1,248 in Colorado
- PHOTO-ENUM Gregory Marrow · 2005
Gregory Abel, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
160 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Gregory Abel, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
160 43% vs specialty avg
Specialty distribution in Colorado
How Optometrist compares to other specialties among Colorado providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Optometrist. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1720077043 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Male |
| NPI Issued | 10/19/2005 |
Brand vs generic prescribing mix · Typical
Gregory Abel, O.D. - brand share 24.0%
Optometrist average
24% brand-name claims vs 76% generic, on 160 2024 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 2024.
160
Total Claims
$18K
Total Drug Cost
33
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 254.867
- Total Day Supply
- 7,102
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 1.04
- Age Distribution
- <65: 0, 65-74: 20, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Gregory Abel, O.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Latanoprost
Latanoprost
91 claims
- Dorzolamide-Timolol 17
Dorzolamide-Timolol
17 claims
- Brimonidine Tartrate 15
Brimonidine Tartrate
15 claims
- Xiidra 15
Xiidra
15 claims
- Timolol Maleate 14
Timolol Maleate
14 claims
| Drug | Claims |
|---|---|
| Latanoprost | 91 |
| Dorzolamide-Timolol Dorzolamide Hcl/Timolol Maleat | 17 |
| Brimonidine Tartrate | 15 |
| Xiidra Lifitegrast | 15 |
| Timolol Maleate | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Gregory Abel, O.D. fits within the Optometrist landscape nationally.
61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider
Gregory Abel, O.D.'s 160 claims are below the specialty average of 279.
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Abel, both outside Colorado so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Optometrist Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Abel.
One of 1,248 Optometrist providers enrolled in Colorado, 5 are shown here.
Dr. Kaleb Abbott
OD
Aurora, CO
Dr. Amy Abel
O.D.
Fort Collins, CO
Dr. Brian Abert
O.D.
Arvada, CO
Dr. Ritu Abraham
OD
Aurora, CO
Dr. Andrew Achziger
O.D.
Greeley, CO
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gregory Abel, O.D.'s specialty? ▼
Gregory Abel, O.D. specializes in Optometrist and practices in Ft Collins, Colorado. Credentials: O.D..
How much does Gregory Abel, O.D. prescribe under Medicare Part D? ▼
In 2024, Gregory Abel, O.D. wrote 160 Medicare Part D claims totaling $18K in drug costs for 33 beneficiaries.
Where is Gregory Abel, O.D. located? ▼
Gregory Abel, O.D. is located at 2111 CUSTER DRIVE, Ft Collins, CO, 80525. Phone: (970) 224-9880.
What is Gregory Abel, O.D.'s NPI number? ▼
Gregory Abel, O.D.'s National Provider Identifier (NPI) is 1720077043, issued on 10/19/2005.
Does Gregory Abel, O.D. prescribe more brand-name or generic drugs? ▼
Gregory Abel, O.D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $17K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 61,426 Optometrist providers across 56 states in the US. The average Optometrist provider writes 279 Medicare Part D claims per year.
What drugs does Gregory Abel, O.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Gregory Abel, O.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Abel, O.D. accept Medicare? ▼
Gregory Abel, O.D. appears in CMS Medicare data with 160 Part D claims and 33 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Abel, O.D.'s credentials? ▼
Gregory Abel, O.D.'s NPI is 1720077043 with credentials O.D.. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.