Doctor profile · Federal record
Dr. Douglas Diemer, PA-C
Physician Assistant · Portage, MI
- NPI 1518037878
- MIPS 84.9 / 100 · 2023
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3200 W Centre Ave, Suite 203
Portage, MI 490244889
(269) 324-0799
fax (269) 324-8013
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- August 30, 2022
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- Michigan #5601004477
- Medicaid (2)
- MI #4179846 · MI #4173074
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1518037878. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
257
Distinct HCPCS
2
Medicare allowed
$14,588
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 231 | 222 | $55 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 26 | 24 | $77 |
In context: peer comparison
Among 10 peers in this city , average services per provider: 164. This provider delivers 1.6× the peer median.Open Payments
Industry payments received
All-time total
$36
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Inspire Medical Systems, Inc. | 1 | $36.22 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
132
Patients
0
Total drug cost
$322,706
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Modafinil | Generic | 29 | 0 | $3,585 |
| Xywav (Sodium,calcium,mag,pot Oxybate) | Brand | 21 | 0 | $313,049 |
| Gabapentin | Generic | 17 | 0 | $137 |
| Ramelteon | Generic | 16 | 0 | $2,114 |
| Dextroamphetamine-Amphetamine (Dextroamphetamine/Amphetamine) | Brand | 13 | 0 | $464 |
| Eszopiclone | Generic | 13 | 0 | $250 |
| Armodafinil | Generic | 12 | 0 | $2,769 |
| Pramipexole Dihydrochloride (Pramipexole Di-Hcl) | Brand | 11 | 0 | $338 |
Frequently asked questions
What is Dr. Douglas Diemer's medical specialty?
Dr. Douglas Diemer practices Physician Assistant in Portage, MI.
Where does Dr. Douglas Diemer practice?
Dr. Douglas Diemer practices at 3200 W Centre Ave, Portage, MI 490244889. Office phone: 2693240799.
What is Dr. Douglas Diemer's NPI?
Dr. Douglas Diemer's National Provider Identifier (NPI) is 1518037878, issued by NPPES.
What procedures does Dr. Douglas Diemer 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). Source: CMS Medicare Physician & Other Practitioners file.