Quick answers
- Does Harolyn C. Gilles accept Medicare assignment?
- Medicare's clinician data says Harolyn C. Gilles may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Harolyn C. Gilles see?
- In 2024, CMS data shows 142 Original Medicare patients and 941 services for Harolyn C. Gilles. This counts Original Medicare only and measures volume, not quality.
- What is Harolyn C. Gilles's NPI number?
- 1437478583. 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 Harolyn C. Gilles, 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 | 142 |
|---|---|
| Services billed to Medicare | 941 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)94 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)36 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)32 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 cholesterol75%
- High blood pressure61%
- Arthritis52%
- Anxiety27%
- Ischemic heart disease23%
- Diabetes21%
Practice locations
Addresses where Harolyn C. Gilles is enrolled with Medicare (CMS data updated October 2, 2026).
- 14300 N Northsight Blvd, Suite 114Scottsdale, AZ 85260
- 3149 Lackland Rd, Suite 104Fort Worth, TX 76116
- PO Box, Suite 39179Phoenix, AZ 85069
Specialties
- Family Practiceprimary
- Preventive Medicinealso
Other family doctors in Scottsdale
Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 1978 (48 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1437478583 |
| 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