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Edit this profileWhere to find Michael S. Kirwin, MD
- Freehold location main office
501 Ironbridge Rd, Ste 10, Freehold, NJ 07728 - Janesville location
3400 E Racine St, Janesville, WI 53546 - Port Angeles location
433 E 8th St, Port Angeles, WA 98362
About Dr. Kirwin
Based in Freehold, NJ, Michael S. Kirwin, MD is listed in the NPI registry under obstetrics & gynecology. Michael graduated from State University of New York Downstate Medical Center in 1991. According to Medicare claims data, Michael cared for 120 Medicare patients across 128 services. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, cervical or vaginal cancer screening; pelvic and clinical breast examination, and screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory. NPI 1548286164 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (732) 431-2999
- Email not available
Practice Locations
501 IRONBRIDGE RD STE 10
Freehold, NJ 07728
3400 E Racine St
Janesville, WI 53546
433 E 8th St
Port Angeles, WA 98362
Conditions Commonly Evaluated or Treated
Within Obstetrics and Gynecology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Pelvic pain and benign gynecology
- Uterine fibroids
- Chronic pelvic pain
- Ovarian cysts
- Painful intercourse
- Pelvic organ prolapse
- Urinary incontinence in women
Most searched conditions
Infections and vulvovaginal conditions
Menstrual and hormonal
- Absent periods
- Genitourinary syndrome of menopause
- Painful periods
- Perimenopause
- Premenstrual syndrome
Pregnancy
- Ectopic pregnancy
- Gestational diabetes
- Hyperemesis gravidarum
- Miscarriage
- Placenta previa
- Postpartum depression
- Preeclampsia
- Preterm labor
Cancer and precancer
- Abnormal cervical cells and cervical dysplasia
- Cervical cancer
- Endometrial cancer
- Endometrial hyperplasia
- Ovarian cancer
Contraception
Fertility
Infections
Pregnancy Complications
Vaginal & Vulvar Health
Procedures & services
Most searched procedures
Contraception and office treatment
Pregnancy and delivery
Preventive and diagnostic
Birth Control
Contraception
Diagnostic Procedures
Fertility
Hormone & Menopause
Laparoscopic and adnexal surgery
Pelvic floor
Postpartum Care
Pregnancy & Prenatal
Preventive Care
Preventive Screening
Routine Exams
Surgeries
Uterine and cervical procedures
Procedures Most Often Billed to Medicare
128 services · 120 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
42 | More often than most peers in OB-GYN |
| Cervical or vaginal cancer screening; pelvic and clinical breast examination | Billing code | G0101 |
38 | More often than most peers in OB-GYN |
| Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory | Billing code | Q0091 |
29 | As often as other peers in OB-GYN |
| Pelvic exam | Office visit | 99459 |
19 | As often as other peers in OB-GYN |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at State University of New York Downstate Medical Center 3
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1991 at State University of New York Downstate Medical Center 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Kirwin's specialty?
Dr. Kirwin is an OB-GYN in Freehold, NJ. That is the designation recorded for this NPI in the federal registry, where it is listed as “Obstetrics & Gynecology”.
NPI registry
Where can I find Dr. Kirwin?
Dr. Kirwin is listed at 501 Ironbridge Rd Ste 10, Freehold, NJ 07728. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Kirwin?
The number on file is (732) 431-2999. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Kirwin's NPI number?
Dr. Kirwin's National Provider Identifier is 1548286164. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Kirwin's medical education?
Dr. Kirwin attended State University of New York Downstate Medical Center, graduating in 1991. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Kirwin been practicing?
Dr. Kirwin has 35 years experience. Calculated from a graduation year of 1991, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Kirwin known for?
According to Medicare billing data, Dr. Kirwin the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Kirwin confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Kirwin. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.