Marcus Lynn Sims, D.O.
Emergency Medicine Physician · Missouri City, TX
Marcus Lynn Sims, D.O. is an emergency medicine physician with a practice address in Missouri City, Texas, and NPI 1023303419, issued on Jun 13, 2011. Check the license (Texas N9301, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marcus Lynn Sims
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- N9301 TX
Self-reported in NPPES; status is on the state search - Practice location
- 8927 Highway 6, Missouri City, TX 77459
- Phone
- (281) 778-8240
- Enumerated
- Jun 13, 2011
- Record last updated
- Dec 18, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Verify Marcus Lynn Sims in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license N9301Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% fewer Medicare Part D claims than the average emergency medicine physician in 2024
192 Medicare Part D claims for 157 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 28 claims were for opioids.
Most prescribed
- Cyclobenzaprine Hcl14 claims
- Cefpodoxime Proxetil13 claims
- Doxycycline Hyclate12 claims
- Ibuprofen11 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: $33.44
1 payment: food and beverage; the largest payer was Inari Medical, Inc. The 12,335 providers of this specialty with any payment received $953.79 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.
Marcus Lynn Sims among 4,885 emergency medicine physician records in Texas
Marcus Lynn Sims, D.O. is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 52% of them.
- NPI issued2011 · 52% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2014 · 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 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Texas
There are 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Missouri City → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Lisa Freeman, M.D.Missouri City, TX 774591609868322
- Courtney Landry, M.D.Missouri City, TX 774591871583500
- Uchenna Ojiaku, MDMissouri City, TX 774591811921000
- Kirt Walker, M.D.Missouri City, TX 774591386636850
- Sankaranarayan Alagugurusamy, M.D.Katy, TX 774501437159696
- Husam Athamneh, M.DKaty, TX 774501669783189
- Jasmine BookertKaty, TX 774501083883821
- Steven Gartzman, M.D.Katy, TX 774501053475632
Common questions
What is Marcus Lynn Sims, D.O.'s NPI number?
Marcus Lynn Sims, D.O.'s National Provider Identifier (NPI) is 1023303419, issued on Jun 13, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Marcus Lynn Sims, D.O. located?
The NPPES record lists a practice address at 8927 Highway 6, Missouri City, TX, 77459. Phone: (281) 778-8240. Providers update this record themselves, so call before visiting.
How can I verify Marcus Lynn Sims, D.O.'s license?
NPPES lists Texas license number N9301, 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 Marcus Lynn Sims, D.O. prescribe under Medicare Part D?
In 2024, Marcus Lynn Sims, D.O. had 192 Medicare Part D claims for 157 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.