Dennis L. Simpson, M.D.
Internal Medicine Physician · Pullman, WA
Dennis L. Simpson, M.D. is an internal medicine physician with a practice address in Pullman, Washington, and NPI 1316979644, issued on Jul 7, 2006. Check the license (Washington MD00020233, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Dennis L. Simpson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD00020233 WA
M-4552 ID
Self-reported in NPPES; status is on the state search - Practice location
- 825 SE Bishop Blvd Ste 200, Pullman, WA 99163
- Phone
- (509) 332-2517
- Enumerated
- Jul 7, 2006
- Record last updated
- Jul 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (509) 334-9247
- Medicaid IDs
- 1055201 WA
003203100 ID - Medicare enrollment
- Enrolled (PECOS I20101028001294); may accept Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1976
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 825 SE Bishop Blvd Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph Aiyenowo, MDInternal Medicine Physician1598792657
- Andrew Becker, PA-CPhysician Assistant1629354683
- Todd Bledsoe, PAMedical Physician Assistant1235296492
- Morgan Burke, FNP-CFamily Nurse Practitioner1255178455
- Sue Cole, PA-CMedical Physician Assistant1437234036
- Clara Garcia, MDFamily Medicine Physician1902433873
Verify Dennis L. Simpson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00020233Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% more Medicare Part D claims than the average internal medicine physician in 2024
3,695 Medicare Part D claims for 305 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 86 claims were for opioids.
Most prescribed
- Atorvastatin Calcium259 claims
- Amlodipine Besylate178 claims
- Simvastatin163 claims
- Losartan Potassium155 claims
- Levothyroxine Sodium140 claims
- Lisinopril122 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: $15.29
1 payment: food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. 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.
Dennis L. Simpson among 3,079 internal medicine physician records in Washington
Dennis L. Simpson, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1976 · median 2006 among the 1,852 with a school on file
- Record last updated2021 · 63% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 internal medicine physician records list a practice address in Pullman
They are 9 of the 597 NPPES records with a practice address in Pullman, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Pullman → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Joseph Aiyenowo, MDPullman, WA 991631598792657
- Stephanie Fosback, MDPullman, WA 991631760591622
- Vinod Mehta, MDPullman, WA 991631821096868
- Guillermo Modad, M.D.Pullman, WA 991631588982888
- Benno Mohr, MDPullman, WA 991631275515058
- Selvasaravanakumar Navaneethakrishnanpoovana, M.DPullman, WA 991631841409935
- Ammar Rizvi, MDPullman, WA 991631447953153
- Linda Fearn, MDPullman, WA 991641972576106
Common questions
What is Dennis L. Simpson, M.D.'s NPI number?
Dennis L. Simpson, M.D.'s National Provider Identifier (NPI) is 1316979644, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis L. Simpson, M.D. located?
The NPPES record lists a practice address at 825 SE Bishop Blvd Ste 200, Pullman, WA, 99163. Phone: (509) 332-2517. Providers update this record themselves, so call before visiting.
How can I verify Dennis L. Simpson, M.D.'s license?
NPPES lists Washington license number MD00020233, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dennis L. Simpson, M.D. prescribe under Medicare Part D?
In 2024, Dennis L. Simpson, M.D. had 3,695 Medicare Part D claims for 305 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.