Jonathan Ellis Welker, PA-C
Medical Physician Assistant · Boulder, CO
Jonathan Ellis Welker, PA-C is a medical physician assistant with a practice address in Boulder, Colorado, and NPI 1770812588, issued on Dec 8, 2009. Check the license (Colorado PA.0002934, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jonathan Ellis Welker
- Credential
- PA-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- PA.0002934 CO
Self-reported in NPPES; status is on the state search - Practice location
- 4801 Riverbend RD Ste 200, Boulder, CO 80301
- Phone
- (303) 415-8800
- Enumerated
- Dec 8, 2009
- Record last updated
- Sep 29, 2022
- Fax
- (303) 415-8801
- Medicare enrollment
- Enrolled (PECOS I20100218000487); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 4801 Riverbend RD Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Delisa ContrerasRegistered Nurse1497676134
- Nicole Getzel, DONeurology Physician1427378090
- Matthew Kidd, D.O.Neurology Physician1417138322
- Satish Rao, M.D.Neurology Physician1265404008
- William Shaffer, M.D.Neurology Physician1801044722
- Alan Zacharias, M.D.Neurology Physician1356385827
Verify Jonathan Ellis Welker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license PA.0002934Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% more Medicare Part D claims than the average medical physician assistant in 2024
1,872 Medicare Part D claims for 311 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin265 claims
- Donepezil Hcl134 claims
- Levetiracetam92 claims
- Primidone86 claims
- Carbidopa-Levodopa84 claims
- Memantine Hcl73 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: $13.26
1 payment: food and beverage; the largest payer was Abbvie Inc. The 16,165 providers of this specialty with any payment received $1,055.00 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.
One hospital affiliation
- Boulder Community HealthBoulder, CO · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Medical Physician Assistant providers in Colorado
There are 1,308 medical physician assistant records in Colorado.
Other medical physician assistant records in Colorado
- Jennifer Abraham, PA-CFort Collins, CO1194121657
- Timothy Adair, PADenver, CO1356485072
- Whitney Adair, MPAS, PA-CAurora, CO1972996890
- Ashley Adams, PA-CGlenwood Springs, CO1982258190
- Bryan Adams, PAAurora, CO1386225662
- Meagan Adams, PA-CAurora, CO1104532241
- Timothy Ahearne, PA-CAurora, CO1396148151
- Amy Akerman, PA-CAurora, CO1922326024
- Brooke Albert, PA-CGolden, CO1932622719
- Marcy Albert, PA-CDenver, CO1497177794
Common questions
What is Jonathan Ellis Welker, PA-C's NPI number?
Jonathan Ellis Welker, PA-C's National Provider Identifier (NPI) is 1770812588, issued on Dec 8, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Ellis Welker, PA-C located?
The NPPES record lists a practice address at 4801 Riverbend RD Ste 200, Boulder, CO, 80301. Phone: (303) 415-8800. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Ellis Welker, PA-C's license?
NPPES lists Colorado license number PA.0002934, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Jonathan Ellis Welker, PA-C prescribe under Medicare Part D?
In 2024, Jonathan Ellis Welker, PA-C had 1,872 Medicare Part D claims for 311 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.