Ari Philip Walter, MD
Sleep Medicine (Family Medicine) Physician · Boulder, CO
Ari Philip Walter, MD is a sleep medicine (family medicine) physician with a practice address in Boulder, Colorado, and NPI 1922669431, issued on Jun 25, 2019. Check the license on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ari Philip Walter
- Credential
- MD
- Primary taxonomy
- Sleep Medicine (Family Medicine) Physician 207QS1201X
- License numbers
- 4301506226 MI
4351045646 MI
Self-reported in NPPES; status is on the state search - Practice location
- 4895 Riverbend RD Ste A, Boulder, CO 80301
- Phone
- (720) 279-9098
- Enumerated
- Jun 25, 2019
- Record last updated
- Jan 23, 2024
- Medicare enrollment
- Enrolled (PECOS I20241105000391); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
4 nearest sleep medicine (family medicine) physician records → All 5 in Colorado → Look up another NPI →
Also registered at 4895 Riverbend RD Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chelsea Klein, PA-CPhysician Assistant1750949855
Verify Ari Philip Walter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado 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
89% fewer Medicare Part D claims than the average sleep medicine (family medicine) physician in 2024
82 Medicare Part D claims for 20 beneficiaries, against an average of 718 among the 211 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin25 claims
- Zolpidem Tartrate19 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: $111.86
1 payment: food and beverage; the largest payer was Avadel Cns Pharmaceuticals, LLC. The 171 providers of this specialty with any payment received $4,214.24 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
- Elan Sleep LLCLongmont, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sleep Medicine (Family Medicine) Physician providers in Colorado
There are 5 sleep medicine (family medicine) physician records in Colorado.
All 5 in Colorado → Every provider in Boulder → Sleep Medicine (Family Medicine) Physician nationwide →
The 4 sleep medicine (family medicine) physician records with the nearest ZIP codes
- Stefan Chimoskey, MDBoulder, CO 803031023102498
- Bogdan Strambu, MDParker, CO 801381427366723
- Victoria Lennox, MDLone Tree, CO 801241528529757
- Kaela GoetzLafayette, CO 800261043132673
Common questions
What is Ari Philip Walter, MD's NPI number?
Ari Philip Walter, MD's National Provider Identifier (NPI) is 1922669431, issued on Jun 25, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Ari Philip Walter, MD located?
The NPPES record lists a practice address at 4895 Riverbend RD Ste A, Boulder, CO, 80301. Phone: (720) 279-9098. Providers update this record themselves, so call before visiting.
How can I verify Ari Philip Walter, MD's license?
Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ari Philip Walter, MD prescribe under Medicare Part D?
In 2024, Ari Philip Walter, MD had 82 Medicare Part D claims for 20 beneficiaries; the average among sleep medicine (family medicine) physician prescribers was 718. 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.