Gerard Pregenzer, MD
NPI 1588671648 · Obstetrics & Gynecology Physician · Warren, NJ
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gerard Pregenzer, MD is a Obstetrics & Gynecology Physician provider in Warren, NJ (NPI 1588671648).
Provider details
- NPI number
- 1588671648
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA0521600 (NJ)
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
2,311 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 397 | $135 |
| Cervical Or Vaginal Cancer Screening; Pelvic and Clinical Breast ExaminationG0101 | 340 | $41 |
| Screening Papanicolaou Smear; Obtaining, Preparing and Conveyance of Cervical Or Vaginal Smear to LaboratoryQ0091 | 338 | $47 |
| Urinalysis, Manual Test81002 | 295 | $3 |
| Complete Ultrasound of Abdomen and Pelvis Artery and Vein Blood Flow93975 | 235 | $287 |
| Ultrasound Scan of Uterus, Ovaries, Tubes, Cervix and Pelvic Area Through Vagina76830 | 233 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Estradiol | 459 | 136 |
| Progesterone, Micronizedbrand: Progesterone | 239 | 61 |
| Thyroid,porkbrand: NP Thyroid | 33 | — |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 30 | 22 |
| Liothyronine Sodium | 20 | — |
| Triamcinolone Acetonide | 19 | 14 |
| Nystatin | 18 | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$95 across 2 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
- 2006-08-02
- Last updated
- 2026-05-13
- Certified
- 2026-05-13
Frequently asked questions
- What is Gerard Pregenzer's NPI number?
- Gerard Pregenzer's National Provider Identifier (NPI) is 1588671648, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerard Pregenzer's specialty?
- Gerard Pregenzer is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Gerard Pregenzer located?
- Gerard Pregenzer's practice location on file with NPPES is 65 Mountain Blvd Ext Ste 201, Warren, NJ 07059-2633.
- What is Gerard Pregenzer's phone number?
- The practice phone number listed in the NPPES registry for Gerard Pregenzer is (732) 469-9400.
- Does Gerard Pregenzer accept Medicare?
- Gerard Pregenzer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gerard Pregenzer's NPI active?
- Yes — Gerard Pregenzer's NPI (1588671648) is active in the NPPES registry as of the last update on 2026-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.