Mark Frazier, PSY.D.
NPI 1679510796 · Psychologist · Arlington Heights, IL
Mark Frazier, PSY.D. is a Psychologist provider in Arlington Heights, IL (NPI 1679510796).
Provider details
- NPI number
- 1679510796
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 071003590 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
795 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Psychotherapy, 45 Minutes90834 | 441 | $104 |
| Psychotherapy, 30 Minutes90832 | 204 | $79 |
| Psychotherapy, 45 Minutes90834 | 85 | $91 |
| Psychotherapy, 30 Minutes90832 | 27 | $69 |
| Psychiatric Diagnostic Evaluation90791 | 26 | $149 |
| Psychiatric Diagnostic Evaluation90791 | 12 | $174 |
Typical Medicare-allowed amounts for these services range $69–$174 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-31
- Last updated
- 2008-11-12
Frequently asked questions
- What is Mark Frazier's NPI number?
- Mark Frazier's National Provider Identifier (NPI) is 1679510796, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Frazier's specialty?
- Mark Frazier is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Mark Frazier located?
- Mark Frazier's practice location on file with NPPES is 139 West Rand Rd., Arlington Heights, IL 60004-3982.
- What is Mark Frazier's phone number?
- The practice phone number listed in the NPPES registry for Mark Frazier is (847) 259-8583.
- Is Mark Frazier's NPI active?
- Yes — Mark Frazier's NPI (1679510796) is active in the NPPES registry as of the last update on 2008-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.