2026 NPPES data Optometrist NPI 1356321616 OD
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CALVIN GRAHAM, OD

Optometrist in FORT SMITH, Arkansas. 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
159
Medicare Part D claims · 63 beneficiaries · Optometrist avg: 257
Generic prescribing
69%
generic claims · 31% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

CALVIN GRAHAM, OD filed 159 Medicare Part D claims in 2023 as a Optometrist in FORT SMITH, Arkansas, prescribing 69% generic.

159
Part D claims, 2023
69%
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.

CALVIN GRAHAM, OD's Medicare Part D volume vs every U.S. prescriber

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

159 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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 CALVIN GRAHAM, OD?

Quality data not reported

NPI registry status

Active

Issued 01/20/2006

NPI 1356321616

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

159 38% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Arkansas

How Optometrist compares to other specialties among Arkansas providers

Arkansas providers

Optometrist share within Arkansas

1. Optometrist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Optometrist share within Arkansas

Specialty board-certification context

Estimated specialty board-certified rate — Optometrist (ABMS / AOA reference)

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

Est. board-certified rate (Optometrist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Optometrist) — 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).

CALVIN GRAHAM, OD is a Optometrist provider practicing in FORT SMITH, Arkansas, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: OD. NPI: 1356321616. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CALVIN GRAHAM, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 1001 LEXINGTON AVE., FORT SMITH, AR, 72901, with a listed phone of (479) 782-6737. NPI 1356321616 was issued on 01/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRAHAM 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 159 prescription claims written by this provider, covering 63 Medicare beneficiaries and totaling roughly $22K in drug spend, split 31% brand-name and 69% 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.

Optometrist is a high-volume specialty nationwide, with 60,463 enrolled providers across 56 states and an average of 257 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

1001 LEXINGTON AVE.
FORT SMITH, AR 72901

Provider Details

NPI 1356321616
Specialty Optometrist
Credentials OD
Gender Male
NPI Issued 01/20/2006

Brand vs generic prescribing mix · Above average

CALVIN GRAHAM, OD — brand share 31.0%
Specialty average (est.)

31% brand-name claims vs 69% generic, on 159 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.

159
Total Claims
$22K
Total Drug Cost
63
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
223
Total Day Supply
5,070
Brand vs Generic
31% brand / 69% generic
Brand Drug Cost
$12K
Generic Drug Cost
$10K

Patient Demographics

Average Patient Age
70.8 years
Avg HCC Risk Score
1.31
Gender Split
60% female / 40% male
Age Distribution
<65: 17, 65-74: 24, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Tobramycin-Dexamethasone
Tobramycin/Dexamethasone
62
Latanoprost
23
Timolol Maleate
17

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

Optometrist Overview

How CALVIN GRAHAM, OD fits within the Optometrist landscape nationally.

60,463
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider

CALVIN GRAHAM, OD's 159 claims are below the specialty average of 257.

Nearby Optometrist Providers in Arkansas

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

Compare Optometrist nationally: see state-by-state distribution →

Frequently Asked Questions

What is CALVIN GRAHAM, OD's specialty?
CALVIN GRAHAM, OD specializes in Optometrist and practices in FORT SMITH, Arkansas. Credentials: OD.
How much does CALVIN GRAHAM, OD prescribe under Medicare Part D?
In 2023, CALVIN GRAHAM, OD wrote 159 Medicare Part D claims totaling $22K in drug costs for 63 beneficiaries.
Where is CALVIN GRAHAM, OD located?
CALVIN GRAHAM, OD is located at 1001 LEXINGTON AVE., FORT SMITH, AR, 72901. Phone: (479) 782-6737.
What is CALVIN GRAHAM, OD's NPI number?
CALVIN GRAHAM, OD's National Provider Identifier (NPI) is 1356321616, issued on 01/20/2006.
Does CALVIN GRAHAM, OD prescribe more brand-name or generic drugs?
CALVIN GRAHAM, OD's prescribing is 31% brand-name and 69% generic drugs by claim count, with $12K in brand drug costs.
How many Optometrist providers are there in the US?
There are 60,463 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does CALVIN GRAHAM, OD prescribe most often?
Based on 2023 Medicare Part D data, CALVIN GRAHAM, OD's most frequently prescribed drugs include Tobramycin-Dexamethasone, Latanoprost, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CALVIN GRAHAM, OD accept Medicare?
CALVIN GRAHAM, OD appears in CMS Medicare data with 159 Part D claims and 63 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CALVIN GRAHAM, OD's credentials?
CALVIN GRAHAM, OD's NPI is 1356321616 with credentials OD. 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