Doctor profile · Federal record
Dr. John Parker, PA-C
Physician Assistant · Grand Rapids, MI
- NPI 1124100508
- Accepts Medicare
- MIPS 93.8 / 100 · 2023
- 31 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4100 Lake Dr Se Ste 200
Grand Rapids, MI 495468292
(616) 391-3759
fax (616) 391-3052 - Mailing address
-
100 Michigan St Ne, Mc 845
Grand Rapids, MI 495032560
Credentials & registration
- NPI registered
- October 2006 — 20 yrs on file
- Profile last updated
- February 25, 2021
- Year of graduation
- 1995 — 31 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- Michigan #5601003563
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1124100508. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
296
Distinct HCPCS
4
Medicare allowed
$24,849
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 207 | 189 | $73 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 61 | 54 | $102 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 15 | 15 | $148 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 13 | 13 | $92 |
In context: peer comparison
Among 234 peers in Grand Rapids Physician Assistant, average services per provider: 56. This provider delivers 5.3× the peer median.Open Payments
Industry payments received
All-time total
$529
Transactions
13
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Jazz Pharmaceuticals INC. | 6 | $271.31 | |
| Axsome Therapeutics, INC. | 1 | $109.37 | |
| Harmony Biosciences LLC | 2 | $70.07 | |
| Idorsia Pharmaceuticals US INC | 2 | $34.99 | |
| Zoll Respicardia, INC. | 1 | $24.03 | |
| Avadel CNS Pharmaceuticals, LLC | 1 | $19.27 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
303
Patients
55
Total drug cost
$9,365
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Gabapentin | Generic | 66 | 16 | $956 |
| Trazodone Hcl | Generic | 48 | 16 | $449 |
| Fluticasone Propionate | Generic | 45 | 11 | $423 |
| Methylphenidate Hcl | Generic | 34 | 0 | $1,335 |
| Modafinil | Generic | 34 | 12 | $4,086 |
| Doxepin Hcl | Generic | 23 | 0 | $1,329 |
| Temazepam | Generic | 23 | 0 | $173 |
| Zolpidem Tartrate | Generic | 18 | 0 | $57 |
| Dextroamphetamine-Amphetamine (Dextroamphetamine/Amphetamine) | Brand | 12 | 0 | $557 |
Hospital affiliations
Frequently asked questions
What is Dr. John Parker's medical specialty?
Dr. John Parker practices Physician Assistant in Grand Rapids, MI.
Where does Dr. John Parker practice?
Dr. John Parker practices at 4100 Lake Dr Se Ste 200, Grand Rapids, MI 495468292. Office phone: 6163913759.
What is Dr. John Parker's NPI?
Dr. John Parker's National Provider Identifier (NPI) is 1124100508, issued by NPPES.
Does Dr. John Parker accept Medicare assignment?
Yes. Dr. John Parker accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Parker commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.