Quick answers
- Does Zachary A. Robertson accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary A. Robertson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Zachary A. Robertson see?
- In 2024, CMS data shows 266 Original Medicare patients and 990 services for Zachary A. Robertson. This counts Original Medicare only and measures volume, not quality.
- What is Zachary A. Robertson's NPI number?
- 1588625701. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Zachary A. Robertson, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 266 |
|---|---|
| Services billed to Medicare | 990 |
| Different services or procedures | 48 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)120 services
- Detection test by immunoassay with direct visual observation for influenza virus (87804)118 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)107 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)95 services
- Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) (87811)71 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure71%
- High cholesterol65%
- Arthritis54%
- Diabetes26%
- Depression26%
- Anxiety25%
Practice locations
Addresses where Zachary A. Robertson is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 10; the Medicare profile lists all.
- 10221 E 81st StTulsa, OK 74133 (918) 252‑9300
- 1217 E 48th St, Suite 100Tulsa, OK 74105 (918) 528‑4897
- 1623 S Utica AveTulsa, OK 74104 (918) 392‑5100
- 2140 S Yale AveTulsa, OK 74114 (918) 712‑9342
- 2254 W Rogers BlvdSkiatook, OK 74070 (918) 895‑9353
Group practices
Medicare enrollment lists Zachary A. Robertson as a member of this group (CMS data updated October 2, 2026).
- Hillcrest Urgent Care, LLC42 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Tulsa
Clinicians with the same Medicare primary specialty in Tulsa, OK — not a recommendation.
Other clinicians in Hillcrest Urgent Care, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588625701 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians