NPPES file of Aug 9, 2026

Gregory Albert Parkin, MD

Internal Medicine Physician · Salt Lake City, UT

Gregory Albert Parkin, MD is an internal medicine physician with a practice address in Salt Lake City, Utah, and NPI 1154360691, issued on Jun 6, 2006. Check the license (Utah 2784501205, as entered in NPPES) on the Utah Medical Licensing Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1154360691
Name
Gregory Albert Parkin
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
2784501205 UT
Self-reported in NPPES; status is on the state search
Practice location
389 S 900 E, Salt Lake City, UT 84102
Phone
(385) 282-2000
Enumerated
Jun 6, 2006
Record last updated
Apr 17, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(385) 282-2001
Medicaid ID
942854058520 UT
Medicare enrollment
Enrolled (PECOS I20080820000755); accepts Medicare assignment
Medical or professional school
Creighton University School Of Medicine, 1993
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 389 S 900 E

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ramiro Aguirre SuarezFamily Nurse Practitioner1134008451
  2. Makenna Akau, RNRegistered Nurse1679284384
  3. Catherine Bakewell, M.D.Sleep Medicine (Internal Medicine) Physician1336151786
  4. Ernest Baldwin, MDEndocrinology, Diabetes & Metabolism Physician1215978234
  5. Bryce Barker, M.D.Ophthalmology Physician1447285242
  6. Laura BarkerFamily Nurse Practitioner1790442564

Verify Gregory Albert Parkin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersUtah Medical Licensing Board
    Search for license 2784501205
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Utah license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.9 times the Medicare Part D claims of the average internal medicine physician in 2024

9,189 Medicare Part D claims for 702 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 375 claims were for opioids.

  1. Gregory Parkin9,189
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium589 claims
  2. Rosuvastatin Calcium400 claims
  3. Levothyroxine Sodium345 claims
  4. Omeprazole291 claims
  5. Losartan Potassium271 claims
  6. Zolpidem Tartrate219 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

  1. Ihc Health Services IncSouth Jordan, UT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory Albert Parkin among 664 internal medicine physician records in Utah

Gregory Albert Parkin, MD is one of 664 internal medicine physician records with a practice address in Utah. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.

  • NPI issued2006 · 3% of these records are older, 60% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 53% of these records are
  • Graduated1993 · median 2007 among the 354 with a school on file
  • Record last updated2013 · 56% 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 Utah practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

329 internal medicine physician records list a practice address in Salt Lake City

They are 329 of the 21,563 NPPES records with a practice address in Salt Lake City, and 664 internal medicine physician records in Utah.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Yong Ahn, MDSlc, UT 841021427023571
  2. Daniel Davis, MDSalt Lake City, UT 841021083652242
  3. Reid Hales, MDSalt Lake City, UT 841021639117823
  4. Darrell Hensleigh, M.D.Salt Lake City, UT 841021407886567
  5. John Hunt, MDSalt Lake City, UT 841021487693289
  6. Joyce Johnson, MDSalt Lake City, UT 841021649245705
  7. Mark Lewis, M.D.Salt Lake City, UT 841021417987587
  8. Russell Maxwell, M.D.Salt Lake City, UT 841021083640767

Common questions

What is Gregory Albert Parkin, MD's NPI number?

Gregory Albert Parkin, MD's National Provider Identifier (NPI) is 1154360691, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Albert Parkin, MD located?

The NPPES record lists a practice address at 389 S 900 E, Salt Lake City, UT, 84102. Phone: (385) 282-2000. Providers update this record themselves, so call before visiting.

How can I verify Gregory Albert Parkin, MD's license?

NPPES lists Utah license number 2784501205, as entered by the provider. Search the Utah Medical Licensing Board at https://secure.utah.gov/llv/search/index.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory Albert Parkin, MD prescribe under Medicare Part D?

In 2024, Gregory Albert Parkin, MD had 9,189 Medicare Part D claims for 702 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.