Marla Hartzen, MD
NPI 1356352447 · Psychiatry Physician · Park Ridge, IL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marla Hartzen, MD is a Psychiatry Physician provider in Park Ridge, IL (NPI 1356352447).
Provider details
- NPI number
- 1356352447
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036-086750 (IL)
Specialties & taxonomies
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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
470 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 249 | $111 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 132 | $63 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 51 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 38 | $85 |
Typical Medicare-allowed amounts for these services range $16–$111 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 88 | 20 |
| Bupropion Hclbrand: Bupropion Xl | 69 | 15 |
| Sertraline Hcl | 54 | 14 |
| Fluoxetine Hcl | 42 | — |
| Trazodone Hcl | 33 | — |
| Alprazolam | 32 | 14 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-11
- Last updated
- 2025-02-20
- Certified
- 2025-02-20
Frequently asked questions
- What is Marla Hartzen's NPI number?
- Marla Hartzen's National Provider Identifier (NPI) is 1356352447, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marla Hartzen's specialty?
- Marla Hartzen is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Marla Hartzen located?
- Marla Hartzen's practice location on file with NPPES is 1875 Dempster St, Park Ridge, IL 60068-1186.
- What is Marla Hartzen's phone number?
- The practice phone number listed in the NPPES registry for Marla Hartzen is (847) 795-3100.
- Does Marla Hartzen accept Medicare?
- Marla Hartzen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marla Hartzen's NPI active?
- Yes — Marla Hartzen's NPI (1356352447) is active in the NPPES registry as of the last update on 2025-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.