Marc Spencer Elieson, MD
Internal Medicine Physician · Waco, TX
Marc Spencer Elieson, MD is an internal medicine physician with a practice address in Waco, Texas, and NPI 1700044013, issued on May 23, 2008. Check the license (Texas M9995, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marc Spencer Elieson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- M9995 TX
Self-reported in NPPES; status is on the state search - Practice location
- 100 Hillcrest Medical Blvd, Waco, TX 76712
- Phone
- (254) 202-5300
- Enumerated
- May 23, 2008
- Record last updated
- Sep 11, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (254) 202-5349
- Medicare enrollment
- Enrolled (PECOS I20090518000028); accepts Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 100 Hillcrest Medical Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cynthia AdamsCertified Registered Nurse Anesthetist1891932984
- Ronald AdcockCertified Registered Nurse Anesthetist1881708105
- Randolph Aguayo, APRN ACNPC-AGAcute Care Nurse Practitioner1174343685
- Miguel AguirreAnesthesiologist Assistant1215170584
- Jazbeen Ahmad, M.D.Internal Medicine Physician1740579903
- David Alexander, M.D.Surgery Physician1598745705
Verify Marc Spencer Elieson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M9995Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average internal medicine physician in 2024
931 Medicare Part D claims for 325 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 58 claims were for opioids.
Most prescribed
- Furosemide64 claims
- Prednisone46 claims
- Cefuroxime42 claims
- Spironolactone26 claims
- Doxycycline Hyclate25 claims
- Clopidogrel24 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: $52.66
2 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Hillcrest Physician ServicesWaco, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Spencer Elieson among 9,175 internal medicine physician records in Texas
Marc Spencer Elieson, MD is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2005 · median 2004 among the 6,088 with a school on file
- Record last updated2020 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
41 internal medicine physician records list a practice address in Waco
They are 41 of the 3,295 NPPES records with a practice address in Waco, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Waco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Gary Barbin, MDWaco, TX 767121568436780
- James Copeland, MDWaco, TX 767121174597348
- Roger Cowart, MDWaco, TX 767121750391546
- Joe Cunningham, M. D.Waco, TX 767121639395676
- Steven Elwell, MDWaco, TX 767121336112556
- James Hodges, MDWaco, TX 767121962441600
- Twiladawn Lovett, M.D.Waco, TX 767121649296161
- Vikas Patel, M.D.Waco, TX 767121083634356
Common questions
What is Marc Spencer Elieson, MD's NPI number?
Marc Spencer Elieson, MD's National Provider Identifier (NPI) is 1700044013, issued on May 23, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Marc Spencer Elieson, MD located?
The NPPES record lists a practice address at 100 Hillcrest Medical Blvd, Waco, TX, 76712. Phone: (254) 202-5300. Providers update this record themselves, so call before visiting.
How can I verify Marc Spencer Elieson, MD's license?
NPPES lists Texas license number M9995, 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 Marc Spencer Elieson, MD prescribe under Medicare Part D?
In 2024, Marc Spencer Elieson, MD had 931 Medicare Part D claims for 325 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.