William Nicholas Maniatis, MD
Specialist · Parker, CO
William Nicholas Maniatis, MD is a specialist with a practice address in Parker, Colorado, and NPI 1154324044, issued on May 24, 2005. Check the license (Colorado 15287, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Nicholas Maniatis
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- 15287 CO
Self-reported in NPPES; status is on the state search - Practice location
- 11960 Lioness Way, Parker, CO 80134
- Phone
- (303) 695-8706
- Enumerated
- May 24, 2005
- Record last updated
- Feb 25, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (303) 695-1211
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,105 in Colorado → Look up another NPI →
Also registered at 11960 Lioness Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Glass, MDSpecialist1164425047
- Nancy Huff, M.D.Urology Physician1912981648
- Joel Kaufman, MDSpecialist1407859390
Verify William Nicholas Maniatis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 15287Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average specialist in 2024
40 Medicare Part D claims, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 33% of 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.
William Nicholas Maniatis among 1,105 specialist records in Colorado
William Nicholas Maniatis, MD is one of 1,105 specialist records with a practice address in Colorado. 12% 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, 96% newer
- In a Medicare fileYes · 12% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2009 · 89% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Colorado
There are 1,105 specialist records in Colorado.
All 1,105 in Colorado → Every provider in Parker → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Larry Bourg, M.D.Parker, CO 801341205800182
- Laura CavalcantiParker, CO 801341811716046
- Michael Glass, MDParker, CO 801341164425047
- Joel Kaufman, MDParker, CO 801341407859390
- Ara Kelly, OTRParker, CO 801341144558990
- Julie Anne Kelty, M.A.C.P.Parker, CO 801341326340084
- Jonathan Seidlin, MDParker, CO 801341649273533
- Alexandra Tsvetkov, RDHParker, CO 801341578081865
Common questions
What is William Nicholas Maniatis, MD's NPI number?
William Nicholas Maniatis, MD's National Provider Identifier (NPI) is 1154324044, issued on May 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Nicholas Maniatis, MD located?
The NPPES record lists a practice address at 11960 Lioness Way, Parker, CO, 80134. Phone: (303) 695-8706. Providers update this record themselves, so call before visiting.
How can I verify William Nicholas Maniatis, MD's license?
NPPES lists Colorado license number 15287, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does William Nicholas Maniatis, MD prescribe under Medicare Part D?
In 2024, William Nicholas Maniatis, MD had 40 Medicare Part D claims; the average among specialist prescribers was 1,380. 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.