Robert W. Halsted, M.D.
Internal Medicine Physician · Washington, MO
Robert W. Halsted, M.D. is an internal medicine physician with a practice address in Washington, Missouri, and NPI 1447286380, issued on Jun 23, 2006. Check the license (Missouri 101829, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Robert W. Halsted
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 101829 MO
Self-reported in NPPES; status is on the state search - Practice location
- 901 Patients First Dr, Washington, MO 63090
- Phone
- (636) 239-7500
- Enumerated
- Jun 23, 2006
- Record last updated
- Jan 13, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (636) 239-2836
- Medicaid ID
- 206979809 MO
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,604 in Missouri → Look up another NPI →
Also registered at 901 Patients First Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kristy Bestgen, MSN, APRN, FNP-CFamily Nurse Practitioner1326487315
Verify Robert W. Halsted in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 101829Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average internal medicine physician in 2024
753 Medicare Part D claims for 220 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium90 claims
- Amlodipine Besylate49 claims
- Omeprazole46 claims
- Clopidogrel32 claims
- Donepezil Hcl26 claims
- Citalopram Hbr25 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.
Robert W. Halsted among 2,604 internal medicine physician records in Missouri
Robert W. Halsted, M.D. is one of 2,604 internal medicine physician records with a practice address in Missouri. 77% 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, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2015 · 48% 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 Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 internal medicine physician records list a practice address in Washington
They are 25 of the 533 NPPES records with a practice address in Washington, and 2,604 internal medicine physician records in Missouri.
All 2,604 in Missouri → Every provider in Washington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Suraj Kumar Alakkassery Kumaran, MDWashington, MO 630901568698306
- Bryce Ayers, M.D.Washington, MO 630901689610446
- Tim Baker, MDWashington, MO 630901760596134
- David Brunworth, MDWashington, MO 630901265546634
- Gary Dumontier, M.D.Washington, MO 630901437192481
- Sarah Dyson, MDWashington, MO 630901922020064
- Thomas Farrell, M.D.Washington, MO 630901952345969
- William Fritz, MDWashington, MO 630901407820913
Common questions
What is Robert W. Halsted, M.D.'s NPI number?
Robert W. Halsted, M.D.'s National Provider Identifier (NPI) is 1447286380, issued on Jun 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert W. Halsted, M.D. located?
The NPPES record lists a practice address at 901 Patients First Dr, Washington, MO, 63090. Phone: (636) 239-7500. Providers update this record themselves, so call before visiting.
How can I verify Robert W. Halsted, M.D.'s license?
NPPES lists Missouri license number 101829, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert W. Halsted, M.D. prescribe under Medicare Part D?
In 2024, Robert W. Halsted, M.D. had 753 Medicare Part D claims for 220 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.