Kevin Isaak, MD
Internal Medicine Physician · Marietta, GA
Kevin Isaak, MD is an internal medicine physician with a practice address in Marietta, Georgia, and NPI 1255837233, issued on Mar 30, 2018. Check the license (Georgia 88865, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- Kevin Isaak
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 88865 GA
Self-reported in NPPES; status is on the state search - Practice location
- 677 Church St NE Lowr Level, Marietta, GA 30060
- Phone
- (770) 793-5186
- Enumerated
- Mar 30, 2018
- Record last updated
- Jul 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210521001801); accepts Medicare assignment
- Medical or professional school
- Morehouse School Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,911 in Georgia → Look up another NPI →
Also registered at 677 Church St NE Lowr Level
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kevin Isaak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 88865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
78 Medicare Part D claims for 40 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 92.9 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $116.37
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Wellstar Medical Group LLCAustell, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kevin Isaak among 3,911 internal medicine physician records in Georgia
Kevin Isaak, MD is one of 3,911 internal medicine physician records with a practice address in Georgia. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 75% of them.
- NPI issued2018 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2018 · median 2005 among the 2,535 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
122 internal medicine physician records list a practice address in Marietta
They are 122 of the 6,900 NPPES records with a practice address in Marietta, and 3,911 internal medicine physician records in Georgia.
All 3,911 in Georgia → Every provider in Marietta → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jackson Bates, MDMarietta, GA 300601144210451
- Jerome Blumenthal, MDMarietta, GA 300601518957844
- David Cantrell, MDMarietta, GA 300601467425124
- Ryan Cantwell, MDMarietta, GA 300601023007457
- Charles Crabbe, MDMarietta, GA 300601891784229
- John Gelly, MDMarietta, GA 300601851381164
- Richard Griffith, MDMarietta, GA 300601528050838
- Van Hill, MDMarietta, GA 300601881677334
Common questions
What is Kevin Isaak, MD's NPI number?
Kevin Isaak, MD's National Provider Identifier (NPI) is 1255837233, issued on Mar 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Kevin Isaak, MD located?
The NPPES record lists a practice address at 677 Church St NE Lowr Level, Marietta, GA, 30060. Phone: (770) 793-5186. Providers update this record themselves, so call before visiting.
How can I verify Kevin Isaak, MD's license?
NPPES lists Georgia license number 88865, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kevin Isaak, MD prescribe under Medicare Part D?
In 2024, Kevin Isaak, MD had 78 Medicare Part D claims for 40 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Kevin Isaak, MD's MIPS final score?
The 2023 MIPS final score is 92.9 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.