Mark Alter, M.D.
NPI 1730263617 · Child & Adolescent Psychiatry Physician · Maywood, IL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Alter, M.D. is a Child & Adolescent Psychiatry Physician provider in Maywood, IL (NPI 1730263617).
Provider details
- NPI number
- 1730263617
- Entity type
- Individual
- Primary specialty
- Child & Adolescent Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MED-PHYS-LIC-48691 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
9 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
17 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) |
|---|---|---|
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 17 | $168 |
Typical Medicare-allowed amounts for these services range $168–$168 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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
Additional practice locations (8)
- 8700 Beverly BlvdWest Hollywood, CA 90048-1804Phone: (310) 423-3465Fax: (310) 423-8397
- 424 Savannah RdLewes, DE 19958-1462Phone: (302) 645-3499Fax: (302) 644-4830
- 216 14th Ave SwSidney, MT 59270-3519Phone: (406) 488-2100
- 765 E Route 70Building aMarlton, NJ 08053-2341Phone: (856) 552-4347Fax: (856) 797-4785
- 130 S Bryn Mawr AveBryn Mawr, PA 19010-3121Phone: (484) 337-4286
- 551 W Lancaster Ave Ste 306Haverford, PA 19041-1419Phone: (610) 892-3800
- 1020 First Colonial RdVirginia Beach, VA 23454-3078Phone: (757) 395-1850
- 515 22nd AveMonroe, WI 53566-1569Phone: (608) 324-1000
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2026-02-05
- Certified
- 2026-02-05
Frequently asked questions
- What is Mark Alter's NPI number?
- Mark Alter's National Provider Identifier (NPI) is 1730263617, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Alter's specialty?
- Mark Alter is listed in the NPPES registry with a primary specialty of Child & Adolescent Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Alter located?
- Mark Alter's practice location on file with NPPES is 2160 S 1st Ave, Maywood, IL 60153-3328.
- What is Mark Alter's phone number?
- The practice phone number listed in the NPPES registry for Mark Alter is (708) 216-9000.
- Does Mark Alter accept Medicare?
- Mark Alter is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Alter's NPI active?
- Yes — Mark Alter's NPI (1730263617) is active in the NPPES registry as of the last update on 2026-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.