Miles Rudyard Maassen, DO
Emergency Medicine Physician · Houston, TX
Miles Rudyard Maassen, DO is an emergency medicine physician with a practice address in Houston, Texas, and NPI 1598320483, issued on May 6, 2019. Check the license on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Miles Rudyard Maassen
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20A19760 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6431 Fannin St Ste Jjl 431, Houston, TX 77030
- Phone
- (713) 500-7878
- Enumerated
- May 6, 2019
- Record last updated
- Oct 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20220722002357); accepts Medicare assignment
- Medical or professional school
- Arizona College Of Osteopathic Medicine Mid Western University, 2019
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 6431 Fannin St Ste Jjl 431
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Miles Rudyard Maassen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average emergency medicine physician in 2024
89 Medicare Part D claims for 66 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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 2 group practices
- Ojai Emergency Physicians CorporationOjai, CA
- Seaside Emergency AssociatesVentura, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Miles Rudyard Maassen among 4,885 emergency medicine physician records in Texas
Miles Rudyard Maassen, DO 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 2019, is newer than 81% of them.
- NPI issued2019 · 81% of these records are older, 16% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2019 · median 2013 among the 2,779 with a school on file
- Record last updated2022 · 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).
818 emergency medicine physician records list a practice address in Houston
They are 818 of the 61,221 NPPES records with a practice address in Houston, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Houston → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Bentley Bobrow, M.D.Houston, TX 770301528040276
- Jack Butler, M.D.Houston, TX 770301962491035
- Pamela Carmain, M.D.Houston, TX 770301285636266
- Crystal Cassidy, M.D.Houston, TX 770301316948599
- Robert Dickson, MDHouston, TX 770301609866391
- Swapan Dubey, M.D.Houston, TX 770301497756175
- Bhushan Kukkalli, M.D.Houston, TX 770301871579276
- Kelly Larkin, M.D.Houston, TX 770301144205683
Common questions
What is Miles Rudyard Maassen, DO's NPI number?
Miles Rudyard Maassen, DO's National Provider Identifier (NPI) is 1598320483, issued on May 6, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Miles Rudyard Maassen, DO located?
The NPPES record lists a practice address at 6431 Fannin St Ste Jjl 431, Houston, TX, 77030. Phone: (713) 500-7878. Providers update this record themselves, so call before visiting.
How can I verify Miles Rudyard Maassen, DO's license?
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 Miles Rudyard Maassen, DO prescribe under Medicare Part D?
In 2024, Miles Rudyard Maassen, DO had 89 Medicare Part D claims for 66 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.