Doctor profile · Federal record
Dr. Jonathan Welker, PA-C
Medical Physician Assistant (CMS: Physician Assistant) · Boulder, CO
- NPI 1770812588
- Accepts Medicare
- 17 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4801 Riverbend RD Ste 200
Boulder, CO 803012613
(303) 415-8800
fax (303) 415-8801 - Mailing address
-
Po Box 9049
Boulder, CO 803019049
Credentials & registration
- NPI registered
- December 2009 — 17 yrs on file
- Profile last updated
- September 29, 2022
- Year of graduation
- 2009 — 17 yrs since
- Specialty taxonomy
- 363AM0700X — NUCC code
- State license (1)
- Colorado #PA.0002934
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770812588. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
384
Distinct HCPCS
5
Medicare allowed
$40,960
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 165 | 127 | $110 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 147 | 129 | $79 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $141 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 19 | 18 | $155 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 16 | 16 | $190 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 1,416. This provider delivers 0.3× the peer median.Open Payments
Industry payments received
All-time total
$13
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 1 | $13.26 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,149
Patients
225
Total drug cost
$392,046
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gabapentin | Generic | 256 | 63 | $8,432 |
| Donepezil Hcl | Generic | 136 | 40 | $1,955 |
| Carbidopa-Levodopa (Carbidopa/Levodopa) | Brand | 107 | 31 | $7,092 |
| Primidone | Generic | 104 | 22 | $5,703 |
| Levetiracetam | Generic | 102 | 28 | $5,726 |
| Baclofen | Generic | 58 | 14 | $1,277 |
| Memantine Hcl | Generic | 57 | 15 | $3,119 |
| Duloxetine Hcl | Generic | 52 | 12 | $845 |
| Lamotrigine | Generic | 51 | 0 | $1,380 |
| Amantadine (Amantadine Hcl) | Brand | 50 | 0 | $2,499 |
Hospital affiliations
Frequently asked questions
What is Dr. Jonathan Welker's medical specialty?
Dr. Jonathan Welker practices Medical Physician Assistant in Boulder, CO.
Where does Dr. Jonathan Welker practice?
Dr. Jonathan Welker practices at 4801 Riverbend RD Ste 200, Boulder, CO 803012613. Office phone: 3034158800.
What is Dr. Jonathan Welker's NPI?
Dr. Jonathan Welker's National Provider Identifier (NPI) is 1770812588, issued by NPPES.
Does Dr. Jonathan Welker accept Medicare assignment?
Yes. Dr. Jonathan Welker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jonathan Welker commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.