Are you Mark J. Diaz, PA-C, MS, MPH? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 2020 Sutter Pl Ste 104, Davis, CA 95616
About Mark Diaz
Mark J. Diaz, PA-C, MS, MPH is a physician assistant based in Davis, CA. Mark is also listed as specializing in physician assistant — surgical. According to Medicare claims data, Mark cared for 202 Medicare patients across 3,736 services. The services billed most often include injection, bupivicaine, not otherwise specified, 0.5 mg, injection, methylprednisolone acetate, 1 mg, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. The provider's National Provider Identifier (NPI) is 1164942116.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (530) 750-5900
- Email not available
Practice Locations
2020 SUTTER PL STE 104
Davis, CA 95616
Procedures Most Often Billed to Medicare
3,736 services · 202 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Aspiration and/or injection of fluid from large joint | Procedure | 20610 |
62 | As often as other peers in Physician Assistant |
| Injection, bupivicaine, not otherwise specified, 0.5 mg | Drug given | J0665 |
2,530 | More often than most peers in Physician Assistant |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
1,000 | Less often than most peers in Physician Assistant |
| Injection, methylprednisolone acetate, 40 mg | Drug given | J1030 |
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 |
84 | As often as other peers in Physician Assistant |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
27 | As often as other peers in Physician Assistant |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
17 | 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 3
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 — 31 related providers in 4 groups
Other physician assistants in Davis 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Aspiration and/or injection of fluid from large joint 8
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Mark J. Diaz, PA-C, MS?
Mark J. Diaz, PA-C, MS is a physician assistant in Davis, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Mark J. Diaz, PA-C, MS's address?
Mark J. Diaz, PA-C, MS is listed at 2020 Sutter Pl Ste 104, Davis, CA 95616. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Mark J. Diaz, PA-C, MS?
The number on file is (530) 750-5900. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Mark J. Diaz, PA-C, MS's NPI number?
Mark J. Diaz, PA-C, MS's National Provider Identifier is 1164942116. 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 Mark J. Diaz, PA-C, MS train?
Mark J. Diaz, PA-C, MS attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How long has Mark J. Diaz, PA-C, MS been practicing?
Mark J. Diaz, PA-C, MS has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Mark J. Diaz, PA-C, MS perform?
According to Medicare billing data, Mark J. Diaz, PA-C, MS performs procedures including aspiration and/or injection of fluid from large joint, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Mark J. Diaz, PA-C, MS confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Mark J. Diaz, PA-C, MS. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.