Garret Michael Johnson, MD
Internal Medicine Physician · Durham, NC
Garret Michael Johnson, MD is an internal medicine physician with a practice address in Durham, North Carolina, and NPI 1427636471, issued on Mar 31, 2021. Check the license (North Carolina 2025-01658, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Garret Michael Johnson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2025-01658 NC
Self-reported in NPPES; status is on the state search - Practice location
- 2310 Erwin RD, Durham, NC 27710
- Phone
- (919) 684-8111
- Enumerated
- Mar 31, 2021
- Record last updated
- Jun 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20250731004489); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2021
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,056 in North Carolina → Look up another NPI →
Also registered at 2310 Erwin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Garret Michael Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2025-01658Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average internal medicine physician in 2024
695 Medicare Part D claims for 106 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium48 claims
- Amlodipine Besylate38 claims
- Lisinopril31 claims
- Diclofenac Sodium27 claims
- Rosuvastatin Calcium26 claims
- Gabapentin22 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.
Bills Medicare through one group practice
- Duke University Health System, IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Garret Michael Johnson among 4,056 internal medicine physician records in North Carolina
Garret Michael Johnson, MD is one of 4,056 internal medicine physician records with a practice address in North Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 92% of them.
- NPI issued2021 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2021 · median 2004 among the 2,706 with a school on file
- Record last updated2025 · 48% 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 North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
380 internal medicine physician records list a practice address in Durham
They are 380 of the 13,451 NPPES records with a practice address in Durham, and 4,056 internal medicine physician records in North Carolina.
All 4,056 in North Carolina → Every provider in Durham → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Martha Adams, M.D.Durham, NC 277101073606018
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- Cheryl Baker, MDDurham, NC 277101356430813
- Richard Frothingham, M.D.Durham, NC 277101912088493
- David Gallagher, MDDurham, NC 277101376575746
- Rania KazanDurham, NC 277101588748495
- James Kelly, MD, MBADurham, NC 277101922004191
- Mary Klotman, MDDurham, NC 277101003846411
Common questions
What is Garret Michael Johnson, MD's NPI number?
Garret Michael Johnson, MD's National Provider Identifier (NPI) is 1427636471, issued on Mar 31, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Garret Michael Johnson, MD located?
The NPPES record lists a practice address at 2310 Erwin RD, Durham, NC, 27710. Phone: (919) 684-8111. Providers update this record themselves, so call before visiting.
How can I verify Garret Michael Johnson, MD's license?
NPPES lists North Carolina license number 2025-01658, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Garret Michael Johnson, MD prescribe under Medicare Part D?
In 2024, Garret Michael Johnson, MD had 695 Medicare Part D claims for 106 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.