Physician Profile
Based in Cambridge, MA, William D. Winkelman, MD is listed in the NPI registry under obstetrics & gynecology. William graduated from Harvard Medical School in 2013. According to Medicare claims data, William cared for 1,355 Medicare patients across 7,520 services. The services billed most often include injection, onabotulinumtoxina, 1 unit, urinalysis, manual test, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
725 CONCORD AVE STE 3500
Cambridge, MA 02138
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.
Most searched conditions
Infections and vulvovaginal conditions
Menstrual and hormonal
Pelvic pain and benign gynecology
Pregnancy
Cancer and precancer
Contraception
Fertility
Infections
Pregnancy Complications
Vaginal & Vulvar Health
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
7,520 services · 1,355 patients · 23 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound measurement of bladder capacity after voiding | Procedure | 51798 |
176 | More often than most peers in OB-GYN |
| Simple bladder irrigation and/or instillation | Procedure | 51700 |
76 | More often than most peers in OB-GYN |
| Non-needle measurement and recording of electrical activity of muscles at bladder and bowel openings | Procedure | 51784 |
54 | More often than most peers in OB-GYN |
| Complex measurement of pressure of urine flow in bladder with urethra pressure and voiding pressure studies | Procedure | 51729 |
54 | More often than most peers in OB-GYN |
| Insertion of device into abdomen with pressure and urine flow rate study | Procedure | 51797 |
53 | More often than most peers in OB-GYN |
| Exam with injections of chemical for destruction of bladder using an endoscope | Procedure | 52287 |
51 | More often than most peers in OB-GYN |
| Electronic assessment of bladder emptying | Procedure | 51741 |
49 | More often than most peers in OB-GYN |
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
25 | As often as other peers in OB-GYN |
| Fitting and insertion of vaginal support device | Procedure | 57160 |
24 | As often as other peers in OB-GYN |
| Creation of sling around urethra in female to control leakage | Procedure | 57288 |
15 | Less often than most peers in OB-GYN |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Winkelman is an OB-GYN in Cambridge, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Obstetrics & Gynecology”.
NPI registry
Dr. Winkelman is listed at 725 Concord Ave Ste 3500, Cambridge, MA 02138. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (617) 354-5452. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Dr. Winkelman's National Provider Identifier is 1316289440. 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
Dr. Winkelman attended Harvard Medical School, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
Dr. Winkelman has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Winkelman performs procedures including ultrasound measurement of bladder capacity after voiding, simple bladder irrigation and/or instillation and non-needle measurement and recording of electrical activity of muscles at bladder and bowel openings, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Winkelman. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.