Warren Kammerer, MD
NPI 1134236565 · Psychiatry Physician · Park Ridge, IL
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Warren Kammerer, MD is a Psychiatry Physician provider in Park Ridge, IL (NPI 1134236565).
Provider details
- NPI number
- 1134236565
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036077883 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
372 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 213 | $94 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 159 | $74 |
Typical Medicare-allowed amounts for these services range $74–$94 (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 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 96 | 15 |
| Duloxetine Hcl | 95 | 12 |
| Lorazepam | 77 | — |
| Venlafaxine Hclbrand: Venlafaxine Hcl Er | 74 | 13 |
| Quetiapine Fumarate | 70 | 11 |
| Clonazepam | 64 | 15 |
| Clozapine | 55 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$440 across 22 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-23
- Last updated
- 2008-03-26
Frequently asked questions
- What is Warren Kammerer's NPI number?
- Warren Kammerer's National Provider Identifier (NPI) is 1134236565, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Kammerer's specialty?
- Warren Kammerer is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Warren Kammerer located?
- Warren Kammerer's practice location on file with NPPES is 1440 Renaissance Dr, Park Ridge, IL 60068-1356.
- What is Warren Kammerer's phone number?
- The practice phone number listed in the NPPES registry for Warren Kammerer is (847) 296-3442.
- Does Warren Kammerer accept Medicare?
- Warren Kammerer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Warren Kammerer's NPI active?
- Yes — Warren Kammerer's NPI (1134236565) is active in the NPPES registry as of the last update on 2008-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.