Doctor profile · Federal record
Dr. Ruth Lijtmaer, PHD
Psychologist (CMS: Clinical Psychologist) · Ridgewood, NJ
- NPI 1104960509
- Accepts Medicare
- 48 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
88 W Ridgewood Ave
Ridgewood, NJ 074503199
(201) 445-5552
fax (201) 444-2598
Credentials & registration
- NPI registered
- February 2007 — 19 yrs on file
- Profile last updated
- April 12, 2026
- Year of graduation
- 1978 — 48 yrs since
- Specialty taxonomy
- 103T00000X — NUCC code
- State license (1)
- New Jersey #35S100158700
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104960509. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
680
Distinct HCPCS
1
Medicare allowed
$72,487
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90834 |
Psychotherapy, 45 minutes | 680 | 26 | $107 |
In context: peer comparison
Among 2 peers in Ridgewood Psychologist, average services per provider: 525. This provider delivers 1.3× the peer median.Frequently asked questions
What is Dr. Ruth Lijtmaer's medical specialty?
Dr. Ruth Lijtmaer practices Psychologist in Ridgewood, NJ.
Where does Dr. Ruth Lijtmaer practice?
Dr. Ruth Lijtmaer practices at 88 W Ridgewood Ave, Ridgewood, NJ 074503199. Office phone: 2014455552.
What is Dr. Ruth Lijtmaer's NPI?
Dr. Ruth Lijtmaer's National Provider Identifier (NPI) is 1104960509, issued by NPPES.
Does Dr. Ruth Lijtmaer accept Medicare assignment?
Yes. Dr. Ruth Lijtmaer accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ruth Lijtmaer commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90834). Source: CMS Medicare Physician & Other Practitioners file.