Walter W. Immel, M.D.
Gastroenterology Physician · Springfield, VA
Walter W. Immel, M.D. is a gastroenterology physician with a practice address in Springfield, Virginia, and NPI 1104826429, issued on Jul 28, 2005. Check the license (Virginia 0101039106, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Walter W. Immel
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 0101039106 VA
Self-reported in NPPES; status is on the state search - Practice location
- 5510 Alma LN, Springfield, VA 22151
- Phone
- (703) 642-5990
- Enumerated
- Jul 28, 2005
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (703) 642-5003
- Medicaid ID
- 5819393 VA
- Medicare enrollment
- Enrolled (PECOS I20100723000262); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 1981
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 536 in Virginia → Look up another NPI →
Also registered at 5510 Alma LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victoria Currall, M.D.Internal Medicine Physician1225038110
- Lynn Daltner, M.D.Internal Medicine Physician1043210941
- Marc Eller, M.D.Family Medicine Physician1942200688
- Feven Eyob, PA-CPhysician Assistant1023818457
- Nicole IoriRegistered Dietitian1356031710
- Sarah Johns, PA-CMedical Physician Assistant1700029295
Verify Walter W. Immel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101039106Check 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 gastroenterology physician in 2024
687 Medicare Part D claims for 319 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Clenpiq122 claims
- Esomeprazole Magnesium115 claims
- Pantoprazole Sodium113 claims
- Omeprazole55 claims
- Linzess42 claims
- Creon21 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.
The MIPS final score for 2023 (Medicare payment program): 95.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $848.54
40 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Virginia Medical Alliance, P.C.Springfield, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter W. Immel among 536 gastroenterology physician records in Virginia
Walter W. Immel, M.D. is one of 536 gastroenterology physician records with a practice address in Virginia. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 83% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1981 · median 2001 among the 389 with a school on file
- Record last updated2007 · 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 207RG0100X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Virginia
There are 536 gastroenterology physician records in Virginia.
All 536 in Virginia → Every provider in Springfield → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Betty Butterfield, MDSpringfield, VA 221501982765418
- Ernest Katz, M.D.Springfield, VA 221501477656791
- Lakshmi Lattimer, M.D.Springfield, VA 221501629242680
- Amy Lin, M.D.Springfield, VA 221501962660985
- Jung Oh, MD,PHDSpringfield, VA 221501710108345
- Margaret Schwiesow, D.O.Springfield, VA 221501346561610
- Stephen Voss, M.D.Springfield, VA 221501992808125
- Houshang Makipour, M.D.Woodbridge, VA 221911184624389
Common questions
What is Walter W. Immel, M.D.'s NPI number?
Walter W. Immel, M.D.'s National Provider Identifier (NPI) is 1104826429, issued on Jul 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Walter W. Immel, M.D. located?
The NPPES record lists a practice address at 5510 Alma LN, Springfield, VA, 22151. Phone: (703) 642-5990. Providers update this record themselves, so call before visiting.
How can I verify Walter W. Immel, M.D.'s license?
NPPES lists Virginia license number 0101039106, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Walter W. Immel, M.D. prescribe under Medicare Part D?
In 2024, Walter W. Immel, M.D. had 687 Medicare Part D claims for 319 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Walter W. Immel, M.D.'s MIPS final score?
The 2023 MIPS final score is 95.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.