Mark Irwin Harris, M.D.
Neurology Physician · Johns Creek, GA
Mark Irwin Harris, M.D. is a neurology physician with a practice address in Johns Creek, Georgia, and NPI 1649262577, issued on Aug 17, 2005. Check the license (Georgia 30084, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark Irwin Harris
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- 30084 GA
Self-reported in NPPES; status is on the state search - Practice location
- 6300 Hospital Pkwy, Johns Creek, GA 30097
- Phone
- (770) 454-4685
- Enumerated
- Aug 17, 2005
- Record last updated
- Jun 3, 2025
- Fax
- (770) 454-4690
- Medicaid ID
- 00371115D GA
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 544 in Georgia → Look up another NPI →
Also registered at 6300 Hospital Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mark Irwin Harris in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 30084Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average neurology physician in 2024
1,261 Medicare Part D claims for 330 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Donepezil Hcl143 claims
- Carbidopa-Levodopa113 claims
- Gabapentin78 claims
- Memantine Hcl65 claims
- Clonazepam58 claims
- Divalproex Sodium49 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.
Industry payments in 2024: $3,937.62
68 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 10,858 providers of this specialty with any payment received $8,318.07 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.
Mark Irwin Harris among 544 neurology physician records in Georgia
Mark Irwin Harris, M.D. is one of 544 neurology physician records with a practice address in Georgia. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Georgia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Georgia
There are 544 neurology physician records in Georgia.
All 544 in Georgia → Every provider in Johns Creek → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Robert Waldrop, M.D.Johns Creek, GA 300971043372444
- Philip Kennedy, MDDuluth, GA 300961912903485
- Ramesh Kumar, MDDuluth, GA 300961528058179
- Shawnay Mazell, M.D.Duluth, GA 300961023374972
- Lisa Rivera, MDDuluth, GA 300961730332131
- Dong Wang, M.D.Duluth, GA 300961497905913
- Saba Bejanishvili, MDAustell, GA 301061659341303
- Sandy McGaffigan, M.D.Austell, GA 301061164460614
Common questions
What is Mark Irwin Harris, M.D.'s NPI number?
Mark Irwin Harris, M.D.'s National Provider Identifier (NPI) is 1649262577, issued on Aug 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Irwin Harris, M.D. located?
The NPPES record lists a practice address at 6300 Hospital Pkwy, Johns Creek, GA, 30097. Phone: (770) 454-4685. Providers update this record themselves, so call before visiting.
How can I verify Mark Irwin Harris, M.D.'s license?
NPPES lists Georgia license number 30084, 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 Mark Irwin Harris, M.D. prescribe under Medicare Part D?
In 2024, Mark Irwin Harris, M.D. had 1,261 Medicare Part D claims for 330 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
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.