Quick answers
- Does Patricia O. Dreyfuss accept Medicare assignment?
- Medicare's clinician data says Patricia O. Dreyfuss may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Patricia O. Dreyfuss see?
- In 2024, CMS data shows 282 Original Medicare patients and 446 services for Patricia O. Dreyfuss. This counts Original Medicare only and measures volume, not quality.
- What is Patricia O. Dreyfuss's NPI number?
- 1841201936. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Patricia O. Dreyfuss, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 282 |
|---|---|
| Services billed to Medicare | 446 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)147 services
- Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory (Q0091)147 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)129 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure64%
- Arthritis46%
- Osteoporosis30%
- Anxiety21%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)17%
Hospitals where Patricia O. Dreyfuss works
Medicare's Facility Affiliation Data lists Patricia O. Dreyfuss at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Chilton Medical CenterPompton Plains, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310017
- Morristown Medical CenterMorristown, NJ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 310015
- Saint Clare's Hospital/ Denville CampusDenville, NJ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 310050
Practice locations
Addresses where Patricia O. Dreyfuss is enrolled with Medicare (CMS data updated October 2, 2026).
- 115 Route 46 West Building D, Suite 27Mountain Lakes, NJ 07046 (973) 334‑3345
- 115 Rt 46, Bldg D Suite 27Mt. Lakes, NJ 07046
- 59 Koch AveMorris Plains, NJ 07950 (973) 538‑1800
Group practices
Medicare enrollment lists Patricia O. Dreyfuss as a member of this group (CMS data updated October 2, 2026).
- State of New Jersey Omb Centralized Payroll131 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Mountain Lakes
Clinicians with the same Medicare primary specialty in Mountain Lakes, NJ — not a recommendation.
Other clinicians in State of New Jersey Omb Centralized Payroll
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1979 (47 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1841201936 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians