Dr. John Nicholson Whelan, DO
- Part D claims, 2024
- 44
- Industry payments
- $540
- State license
- 1
- Year NPI issued
- 2021
- Practice address
- 901 N Porter Ave, Norman, OK 73071
- Practice phone
- Call (405) 271-8001
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Whelan's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Nicholson Whelan is a psychiatrist in Norman, Oklahoma
Dr. Whelan practices in Norman, Oklahoma.
Dr. Whelan's NPI, 1194393041, was assigned on June 16, 2021. Dr. Whelan holds Oklahoma license 8067.
- NPI
- 1194393041NPI Registry (opens in a new tab)
- NPI enumeration date
- June 16, 2021
- NPI status
- Active
- Practice phone
- (405) 271-8001
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John Nicholson Whelan's practice address is in Norman, Oklahoma
Dr. Whelan's practice address in the NPI Registry is 901 N Porter Ave, Norman, OK 73071, in Cleveland County. The practice phone is (405) 271-8001.
- NPI Registry address901 N Porter Ave, Norman, OK 73071 · Cleveland CountyPhone(405) 271-8001
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John Nicholson Whelan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Whelan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Whelan's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Nicholson Whelan is one of 341 psychiatrists in Oklahoma
Psychiatry is Dr. Whelan's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Whelan is licensed in Oklahoma.
Specialties and state licenses
- Psychiatry, OklahomaPrimary
Psychiatrists near Dr. Whelan
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Nicholson Whelan wrote 44 Medicare Part D claims in 2024
In 2024, Dr. Whelan wrote 44 Medicare Part D claims for 11 patients. 84% of them were for generic drugs.
Dr. Whelan's Part D claims by kind of drug, 2024
- Generic37 claims84%
- Brand-name and other7 claims16%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. John Nicholson Whelan received $540 in industry payments from 2023 to 2025
CMS Open Payments shows 5 general payments to Dr. Whelan from 3 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 100% of the total. Alkermes, Inc. paid the most, $233.
General payments to Dr. Whelan by program year, 2023 to 2025
Companies that paid Dr. Whelan the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Nicholson Whelan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Nicholson Whelan
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Nicholson Whelan's NPI number?
Dr. John Nicholson Whelan's NPI number is 1194393041. It was assigned on June 16, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. John Nicholson Whelan?
Dr. John Nicholson Whelan is a psychiatrist in Norman, Oklahoma. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. John Nicholson Whelan practice?
Dr. Whelan practices at 901 N Porter Ave, Norman, OK 73071.
What is Dr. John Nicholson Whelan's office phone number?
The practice phone on file for Dr. Whelan is (405) 271-8001.
What is Dr. John Nicholson Whelan's medical license number?
Dr. Whelan holds Oklahoma license 8067.
Has Dr. John Nicholson Whelan received payments from drug or device companies?
CMS Open Payments shows $540 in general payments to Dr. Whelan from 3 companies from 2023 to 2025. The largest total came from Alkermes, Inc.
How long has Dr. John Nicholson Whelan been practicing?
Dr. Whelan's NPI was assigned in 2021.
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