NPPES file of Aug 9, 2026

John G. Holland, MD

Obstetrics & Gynecology Physician · Hattiesburg, MS

John G. Holland, MD is an obstetrics & gynecology physician with a practice address in Hattiesburg, Mississippi, and NPI 1851404495, issued on Aug 17, 2006. Check the license (Mississippi 12125, as entered in NPPES) on the Mississippi State Board of Medical Licensure; 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
1851404495
Name
John G. Holland
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
12125 MS
Self-reported in NPPES; status is on the state search
Practice location
421 S 28TH Ave, Hattiesburg, MS 39401
Phone
(601) 268-5640
Enumerated
Aug 17, 2006
Record last updated
Jul 8, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(601) 261-3507
Medicaid IDs
1419869 LA
00110596 MS
Medicare enrollment
Enrolled (PECOS I20080128000541); accepts Medicare assignment
Medical or professional school
University Of Mississippi School Of Medicine, 1988
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 421 S 28TH Ave

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

  1. Jennifer Bailey, MDObstetrics & Gynecology Physician1447431465
  2. Louis Benton, MDObstetrics & Gynecology Physician1538173398
  3. Lauren Bethea, M.D.Obstetrics & Gynecology Physician1265744437
  4. Marie Darby, M.D.Maternal & Fetal Medicine Physician1891970521
  5. Hilton Gillespie, MDObstetrics & Gynecology Physician1871503086
  6. Melissa Holland, MDObstetrics & Gynecology Physician1982717534

Verify John G. Holland in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
    Search for license 12125
    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 Mississippi license search

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2.3 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024

387 Medicare Part D claims for 104 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. John Holland387
  2. Specialty average165

Most prescribed

  1. Valacyclovir52 claims
  2. Estradiol49 claims
  3. Metronidazole32 claims
  4. Terconazole27 claims
  5. Bupropion Xl23 claims
  6. Oxybutynin Chloride Er21 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: $128.60

8 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. John Holland$128.60
  2. Specialty average$1,030.61

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

  1. Hattiesburg Clinic PAHattiesburg, MS

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

30 obstetrics & gynecology physician records list a practice address in Hattiesburg

They are 30 of the 2,569 NPPES records with a practice address in Hattiesburg, and 326 obstetrics & gynecology physician records in Mississippi.

Other obstetrics & gynecology physician records in Mississippi

  1. Joseph Acosta, M.D.Meridian, MS1720060551
  2. Michael Adams, D.O.Greenwood, MS1093206252
  3. Gabrielle Alexander, MDTupelo, MS1013412006
  4. Rashad Ali, M.D.Laurel, MS1649297201
  5. Bailey AndersonJackson, MS1790549541
  6. Devon AshleyJackson, MS1376394122
  7. Nobel Attipoe, MDJackson, MS1497864169
  8. Joseph AustinVicksburg, MS1316028194
  9. Melissa Bacon, DOMadison, MS1356458012
  10. Jennifer Bailey, MDHattiesburg, MS1447431465

Common questions

What is John G. Holland, MD's NPI number?

John G. Holland, MD's National Provider Identifier (NPI) is 1851404495, issued on Aug 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John G. Holland, MD located?

The NPPES record lists a practice address at 421 S 28TH Ave, Hattiesburg, MS, 39401. Phone: (601) 268-5640. Providers update this record themselves, so call before visiting.

How can I verify John G. Holland, MD's license?

NPPES lists Mississippi license number 12125, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does John G. Holland, MD prescribe under Medicare Part D?

In 2024, John G. Holland, MD had 387 Medicare Part D claims for 104 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.