Provider Profile
Gregory W. Dinwiddie, PAC
Unclaimed ProfileAbout Gregory Dinwiddie
Gregory W. Dinwiddie, PAC is a physician assistant practicing in Oklahoma City, OK. According to Medicare claims data, Gregory cared for 177 Medicare patients across 200 services. The services billed most often include insertion of non-tunneled central venous tube for infusion (5 years or older), harvest of vein using an endoscope, and coronary artery bypass using artery graft, 1 graft.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (405) 949-3349
- Email not available
Practice Locations
3300 NW EXPRESSWAY
Oklahoma City, OK 73112
Procedures Most Often Billed to Medicare
200 services · 177 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | Procedure | 36556 |
89 | More than most peers in Physician Assistant |
| Harvest of vein using an endoscope | Procedure | 33508 |
26 | More often than most peers in Physician Assistant |
| Coronary artery bypass using artery graft, 1 graft | Procedure | 33533 |
24 | More often than most peers in Physician Assistant |
| Partial destruction and reconstruction of right upper heart chamber | Procedure | 33257 |
19 | Too few peers to compare |
| Coronary artery bypass using vein or artery graft, 2 grafts | Procedure | 33518 |
14 | As often as other peers in Physician Assistant |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
16 | Less often than most peers in Physician Assistant |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
12 | Less often than most peers in Physician Assistant |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other physician assistants at this location 2
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other physician assistants in Oklahoma City 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2000 at Other 7
Providers who graduated from the same medical school in the same year.
Also performs Insertion of non-tunneled central venous tube for infusion (5 years or older) 8
Providers in OK who bill this service to Medicare most often.
Common questions
What kind of doctor is Gregory W. Dinwiddie?
Gregory W. Dinwiddie is a physician assistant in Oklahoma City, OK. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Gregory W. Dinwiddie's address?
Gregory W. Dinwiddie is listed at 3300 Nw Expressway, Oklahoma City, OK 73112. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Gregory W. Dinwiddie?
The number on file is (405) 949-3349. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Gregory W. Dinwiddie's NPI number?
Gregory W. Dinwiddie's National Provider Identifier is 1578567848. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Gregory W. Dinwiddie train?
Gregory W. Dinwiddie attended Other, graduating in 2000. This comes from the CMS National Downloadable File.
CMS public data
How long has Gregory W. Dinwiddie been practicing?
Gregory W. Dinwiddie has 26 years experience. Calculated from a graduation year of 2000, reported in the CMS National Downloadable File.
CMS public data
What procedures does Gregory W. Dinwiddie perform?
According to Medicare billing data, Gregory W. Dinwiddie performs procedures including insertion of non-tunneled central venous tube for infusion, harvest of vein using an endoscope and coronary artery bypass using artery graft, 1 graft, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Gregory W. Dinwiddie confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gregory W. Dinwiddie. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.