Michael Sloan Mackelvie, D.O.
Obstetrics & Gynecology Physician · Houston, TX
Michael Sloan Mackelvie, D.O. is an obstetrics & gynecology physician with a practice address in Houston, Texas, and NPI 1154748119, issued on Mar 27, 2014. Check the license (Texas R6615, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Michael Sloan Mackelvie
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- R6615 TX
Self-reported in NPPES; status is on the state search - Practice location
- 15655 Cypress Wood Medical Dr Ste 100, Houston, TX 77014
- Phone
- (713) 442-1700
- Enumerated
- Mar 27, 2014
- Record last updated
- Jun 11, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 389401601 TX
389401602 TX
389401603 TX - Medicare enrollment
- Enrolled (PECOS I20180821001529); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 3,524 in Texas → Look up another NPI →
Also registered at 15655 Cypress Wood Medical Dr Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zohaib Ahmed, DOFamily Medicine Physician1649918897
- Tonya Alexander, BSN, MSN,APRN, FNP-CFamily Nurse Practitioner1023506250
- Autumn Brown, FNP-BCFamily Nurse Practitioner1659069813
- Deepthi Chiluvuri, D.O.Internal Medicine Physician1740660331
- Michael Cohen, MDPain Medicine (Anesthesiology) Physician1114380185
- Meredith Dufrene, CRNACertified Registered Nurse Anesthetist1922516756
Verify Michael Sloan Mackelvie in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license R6615Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
117 Medicare Part D claims for 32 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Estradiol29 claims
- Estradiol (Twice Weekly)20 claims
- Valacyclovir11 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: $250.17
5 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.
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
- Obhg Texas Holdings PAThe Woodlands, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Sloan Mackelvie among 3,524 obstetrics & gynecology physician records in Texas
Michael Sloan Mackelvie, D.O. is one of 3,524 obstetrics & gynecology physician records with a practice address in Texas. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 75% of them.
- NPI issued2014 · 75% of these records are older, 22% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2014 · median 2005 among the 2,093 with a school on file
- Record last updated2021 · 54% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Texas
There are 3,524 obstetrics & gynecology physician records in Texas.
All 3,524 in Texas → Every provider in Houston → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jim Benge, MDHouston, TX 770141306877865
- Carol Collins, MDHouston, TX 770141477588077
- Denise Leonard, MDHouston, TX 770141457349581
- Shaylon Brownfield, M.D.Houston, TX 770151801809132
- Kalpana Cadambi, M.D.,Houston, TX 770151629263439
- Robert Morris, M.D.Houston, TX 770131952353252
- Christie Obukofe, M.D.Houston, TX 770151790869279
- Marcelo Totorica, M.D.Houston, TX 770131770532210
Common questions
What is Michael Sloan Mackelvie, D.O.'s NPI number?
Michael Sloan Mackelvie, D.O.'s National Provider Identifier (NPI) is 1154748119, issued on Mar 27, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Michael Sloan Mackelvie, D.O. located?
The NPPES record lists a practice address at 15655 Cypress Wood Medical Dr Ste 100, Houston, TX, 77014. Phone: (713) 442-1700. Providers update this record themselves, so call before visiting.
How can I verify Michael Sloan Mackelvie, D.O.'s license?
NPPES lists Texas license number R6615, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Sloan Mackelvie, D.O. prescribe under Medicare Part D?
In 2024, Michael Sloan Mackelvie, D.O. had 117 Medicare Part D claims for 32 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.