Mary Carleton Johnston, MD
Obstetrics & Gynecology Physician · Mobile, AL
Mary Carleton Johnston, MD is an obstetrics & gynecology physician with a practice address in Mobile, Alabama, and NPI 1376034298, issued on May 26, 2018. Check the license (Alabama 44776, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary Carleton Johnston
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 44776 AL
Self-reported in NPPES; status is on the state search - Practice location
- 1720 Spring Hill Ave Ste 400, Mobile, AL 36604
- Phone
- (251) 435-7700
- Enumerated
- May 26, 2018
- Record last updated
- Jun 17, 2026
- Fax
- (251) 435-7702
- Medicaid ID
- 287573 AL
- Medicare enrollment
- Enrolled (PECOS I20221004001958); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 525 in Alabama → Look up another NPI →
Also registered at 1720 Spring Hill Ave Ste 400
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Dix, MDObstetrics & Gynecology Physician1700029519
- Brittney Laughlin, D.O.Obstetrics & Gynecology Physician1649437732
Verify Mary Carleton Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license 44776Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average obstetrics & gynecology physician in 2024
536 Medicare Part D claims for 140 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 14 claims were for opioids.
Most prescribed
- Estradiol105 claims
- Clobetasol Propionate59 claims
- Fluconazole55 claims
- Medroxyprogesterone Acetate26 claims
- Metronidazole26 claims
- Myrbetriq24 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: $288.75
24 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, 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.
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
- Mobile Obstetrics And Gynecology PCMobile, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Carleton Johnston among 525 obstetrics & gynecology physician records in Alabama
Mary Carleton Johnston, MD is one of 525 obstetrics & gynecology physician records with a practice address in Alabama. 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 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2018 · median 2004 among the 350 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 obstetrics & gynecology physician records list a practice address in Mobile
They are 78 of the 6,309 NPPES records with a practice address in Mobile, and 525 obstetrics & gynecology physician records in Alabama.
All 525 in Alabama → Every provider in Mobile → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Frankie Bodie, MDMobile, AL 366041568405066
- Constance Dabezies, M.D.Mobile, AL 366041164425310
- Brian Dix, MDMobile, AL 366041700029519
- Michael Fesenmeier, MDMobile, AL 366041316938277
- Julie Grinstead, M.D.Mobile, AL 366041376635177
- Nicolette Holliday, M.D.Mobile, AL 366041285863670
- John Lafleur, M.D.Mobile, AL 366041316989486
- Brittney Laughlin, D.O.Mobile, AL 366041649437732
Common questions
What is Mary Carleton Johnston, MD's NPI number?
Mary Carleton Johnston, MD's National Provider Identifier (NPI) is 1376034298, issued on May 26, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Mary Carleton Johnston, MD located?
The NPPES record lists a practice address at 1720 Spring Hill Ave Ste 400, Mobile, AL, 36604. Phone: (251) 435-7700. Providers update this record themselves, so call before visiting.
How can I verify Mary Carleton Johnston, MD's license?
NPPES lists Alabama license number 44776, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Carleton Johnston, MD prescribe under Medicare Part D?
In 2024, Mary Carleton Johnston, MD had 536 Medicare Part D claims for 140 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.