2026 NPPES data Optometrist NPI 1821139080 R.PH, O.D.
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CHARLES CALLAWAY, R.PH, O.D.

Optometrist in CHATSWORTH, Georgia. 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
33
Medicare Part D claims · 13 beneficiaries · Optometrist avg: 257
Generic prescribing
52%
generic claims · 48% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: CHARLES CALLAWAY, R.PH, O.D. is a Optometrist ([object Object]) practicing in CHATSWORTH, Georgia with a Medicare Part D prescribing footprint of 33 claims across 13 beneficiaries — 48% brand-name prescribing .

What stands out: CHARLES CALLAWAY, R.PH, O.D. filed 33 Medicare Part D claims in 2023 across CHATSWORTH, Georgia. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CHARLES CALLAWAY, R.PH, O.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 02/09/2007

NPI 1821139080

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

33 87% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Georgia

How Optometrist compares to other specialties among Georgia providers

Georgia providers

Optometrist share within Georgia

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

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).

CHARLES CALLAWAY, R.PH, O.D. is a Optometrist provider practicing in CHATSWORTH, Georgia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: R.PH, O.D.. NPI: 1821139080. 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.

CHARLES CALLAWAY, R.PH, O.D. appears in the CMS NPPES registry as a Optometrist provider holding R.PH, O.D. credentials at 2120 HIGHWAY 76 STE A, CHATSWORTH, GA, 30705, with a listed phone of (706) 695-0107. NPI 1821139080 was issued on 02/09/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CALLAWAY 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 33 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $3K in drug spend, split 48% brand-name and 52% 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

2120 HIGHWAY 76 STE A
CHATSWORTH, GA 30705

Provider Details

NPI 1821139080
Specialty Optometrist
Credentials R.PH, O.D.
Gender Male
NPI Issued 02/09/2007

Brand vs generic prescribing mix · Above average

CHARLES CALLAWAY, R.PH, O.D. — brand share 48.0%
Specialty average (est.)

48% brand-name claims vs 52% generic, on 33 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.

33
Total Claims
$3K
Total Drug Cost
13
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
54
Total Day Supply
1,581
Brand vs Generic
48% brand / 52% generic
Brand Drug Cost
$2K
Generic Drug Cost
$454

Patient Demographics

Average Patient Age
75.8 years
Avg HCC Risk Score
1.09

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Latanoprost
23

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

Optometrist Overview

How CHARLES CALLAWAY, R.PH, O.D. fits within the Optometrist landscape nationally.

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

CHARLES CALLAWAY, R.PH, O.D.'s 33 claims are below the specialty average of 257.

Nearby Optometrist Providers in Georgia

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

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

Frequently Asked Questions

What is CHARLES CALLAWAY, R.PH, O.D.'s specialty?
CHARLES CALLAWAY, R.PH, O.D. specializes in Optometrist and practices in CHATSWORTH, Georgia. Credentials: R.PH, O.D..
How much does CHARLES CALLAWAY, R.PH, O.D. prescribe under Medicare Part D?
In 2023, CHARLES CALLAWAY, R.PH, O.D. wrote 33 Medicare Part D claims totaling $3K in drug costs for 13 beneficiaries.
Where is CHARLES CALLAWAY, R.PH, O.D. located?
CHARLES CALLAWAY, R.PH, O.D. is located at 2120 HIGHWAY 76 STE A, CHATSWORTH, GA, 30705. Phone: (706) 695-0107.
What is CHARLES CALLAWAY, R.PH, O.D.'s NPI number?
CHARLES CALLAWAY, R.PH, O.D.'s National Provider Identifier (NPI) is 1821139080, issued on 02/09/2007.
Does CHARLES CALLAWAY, R.PH, O.D. prescribe more brand-name or generic drugs?
CHARLES CALLAWAY, R.PH, O.D.'s prescribing is 48% brand-name and 52% generic drugs by claim count, with $2K 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 CHARLES CALLAWAY, R.PH, O.D. prescribe most often?
Based on 2023 Medicare Part D data, CHARLES CALLAWAY, R.PH, O.D.'s most frequently prescribed drugs include Latanoprost. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLES CALLAWAY, R.PH, O.D. accept Medicare?
CHARLES CALLAWAY, R.PH, O.D. appears in CMS Medicare data with 33 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLES CALLAWAY, R.PH, O.D.'s credentials?
CHARLES CALLAWAY, R.PH, O.D.'s NPI is 1821139080 with credentials R.PH, 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

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