2026 NPPES data Cardiovascular Disease Physician NPI 1548203458 M.D.
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THOMAS GUEST, M.D.

Cardiovascular Disease Physician in ATLANTA, 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
5K
Medicare Part D claims · 698 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
92.2614/100
▲ 9 pts above national avg 83.1 · [object Object]
What the federal data reveals: THOMAS GUEST, M.D. is a Cardiovascular Disease Physician ([object Object]) practicing in ATLANTA, Georgia with a Medicare Part D prescribing footprint of 5K claims across 698 beneficiaries — 16% brand-name prescribing . Their CMS MIPS Final Score of 92.2614/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: THOMAS GUEST, M.D. reported a CMS MIPS final score of 92.2614 out of 100, above the 83.1 national average, and filed 4,863 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

THOMAS GUEST, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

THOMAS GUEST, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/14/2006

NPI 1548203458

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

4,863 60% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

MIPS final score

92.2614/100 9.1614% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Georgia

How Cardiovascular Disease Physician compares to other specialties among Georgia providers

Georgia providers

Cardiovascular Disease Physician share within Georgia

1. Cardiovascular Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cardiovascular Disease Physician share within Georgia

Medicare quality performance — MIPS

THOMAS GUEST, M.D.'s 2023 MIPS final score plotted against the Cardiovascular Disease Physician national average

High performer (top quartile)
MIPS Final Score
92.2614/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Cardiovascular Disease Physician) — 92.2614/100 vs national avg 83.1

0%100%National avg83%92.3%
MIPS final score (Cardiovascular Disease Physician) — 92.2614/100 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).

THOMAS GUEST, M.D. is a Cardiovascular Disease Physician provider practicing in ATLANTA, Georgia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1548203458. 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.

THOMAS GUEST, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 5669 PEACHTREE DUNWOODY RD NE, ATLANTA, GA, 30342, with a listed phone of (404) 252-8377. NPI 1548203458 was issued on 06/14/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GUEST 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 4,863 prescription claims written by this provider, covering 698 Medicare beneficiaries and totaling roughly $999K in drug spend, split 16% brand-name and 84% 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 92.2614/100 for the 2023 performance year (Quality 73.8353), compared with the national average of 83.1.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

5669 PEACHTREE DUNWOODY RD NE
ATLANTA, GA 30342

Provider Details

NPI 1548203458
Specialty Cardiovascular Disease Physician
Credentials M.D.
Gender Male
NPI Issued 06/14/2006

CMS Quality Score (MIPS)

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

92.2614
Final Score
Avg: 83.1
73.8353
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where THOMAS GUEST, M.D. 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.

THE EMORY CLINIC INC
ATLANTA, GA

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 · Typical

THOMAS GUEST, M.D. — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 4,863 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.

4,863
Total Claims
$999K
Total Drug Cost
698
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
13,030
Total Day Supply
389,429
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$915K
Generic Drug Cost
$83K

Patient Demographics

Average Patient Age
77.4 years
Avg HCC Risk Score
1.34
Gender Split
45% female / 55% male
Age Distribution
<65: 12, 65-74: 251, 75-84: 309, 85+: 126

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metoprolol Succinate
616
Eliquis
Apixaban
515
Atorvastatin Calcium
477
Benazepril Hcl
335
Amlodipine Besylate
324
Hydrochlorothiazide
288
Losartan Potassium
262
Rosuvastatin Calcium
219
Carvedilol
186
Metoprolol Tartrate
142

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

Cardiovascular Disease Physician Overview

How THOMAS GUEST, M.D. fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

THOMAS GUEST, M.D.'s 4,863 claims are above the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in Georgia

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is THOMAS GUEST, M.D.'s specialty?
THOMAS GUEST, M.D. specializes in Cardiovascular Disease Physician and practices in ATLANTA, Georgia. Credentials: M.D..
How much does THOMAS GUEST, M.D. prescribe under Medicare Part D?
In 2023, THOMAS GUEST, M.D. wrote 4,863 Medicare Part D claims totaling $999K in drug costs for 698 beneficiaries.
What is THOMAS GUEST, M.D.'s Medicare quality score?
THOMAS GUEST, M.D. has a CMS MIPS Final Score of 92.2614/100 (Quality: 73.8353). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is THOMAS GUEST, M.D. located?
THOMAS GUEST, M.D. is located at 5669 PEACHTREE DUNWOODY RD NE, ATLANTA, GA, 30342. Phone: (404) 252-8377.
What is THOMAS GUEST, M.D.'s NPI number?
THOMAS GUEST, M.D.'s National Provider Identifier (NPI) is 1548203458, issued on 06/14/2006.
Does THOMAS GUEST, M.D. prescribe more brand-name or generic drugs?
THOMAS GUEST, M.D.'s prescribing is 16% brand-name and 84% generic drugs by claim count, with $915K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does THOMAS GUEST, M.D. prescribe most often?
Based on 2023 Medicare Part D data, THOMAS GUEST, M.D.'s most frequently prescribed drugs include Metoprolol Succinate, Eliquis, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS GUEST, M.D. accept Medicare?
THOMAS GUEST, M.D. appears in CMS Medicare data with 4,863 Part D claims and 698 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS GUEST, M.D.'s credentials?
THOMAS GUEST, M.D.'s NPI is 1548203458 with credentials M.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.
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