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DR. WILLIAM VANDERVEER PROBASCO M.D., M.S.
NPI 1336503382
Orthopaedic Surgery - Foot and Ankle Surgery in Fairfield, CT

Active since April 06, 2016PECOS EnrolledAccepts Medicare Assignment
83.33/100
CMS Quality Rating
305 BLACK ROCK TPKE, FAIRFIELD, CT 06825(203) 337-2600(203) 337-2611 Get Directions Write a Review

NPPES record last updated: October 3, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 3, 2022, Sep 20, 2022, Jul 21, 2021 (3 updates tracked since 2021).

About Dr. William Vanderveer Probasco M.d., M.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WILLIAM VANDERVEER PROBASCO M.D., M.S. (NPI 1336503382) is an individual foot and ankle surgery provider in Fairfield, Connecticut, licensed in Connecticut (69667) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Baltimore, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1336503382
Entity TypeIndividualMale
Primary Taxonomy207XX0004X
Provider Legal NameDR. WILLIAM VANDERVEER PROBASCOCredential: M.D., M.S.
Location Address305 BLACK ROCK TPKEFairfield, CT 06825-5508
Mailing Address305 Black Rock TpkeFairfield, CT 06825-5508 · (203) 337-2600
Phone(203) 337-2600
Fax(203) 337-2611
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateApril 6, 2016
Last NPPES UpdateOctober 3, 20223 updates tracked since enumeration
NPPES CertifiedOctober 3, 2022
✔ NPI 1336503382 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Foot and Ankle SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207XX0004X
Licenses✔ Licensed in CT · 69667✔ Licensed in MD · D91392
Definition
Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, foot and ankle surgeons deal with adult reconstructive foot and ankle surgery, adult foot and ankle trauma, sports medicine foot and ankle, and children's foot and ankle reconstructive surgery.
305 BLACK ROCK TPKE, Fairfield, CT 06825
Open in Google Maps ↗

Secondary Practice Location 1

Location 1301 Saint Paul StBaltimore, MD 21202-2102 · Phone (410) 659-2800 · Fax (410) 659-2999

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. William Vanderveer Probasco M.d., M.s. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6103229141
PECOS Enrollment IDI20220817003654
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show William Probasco reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Orthopaedic Specialty Group, P.C.
Same address
Orthopaedic Surgery
305 BLACK ROCK TPKE
Fairfield, CT 06825
  • Reassigned Medicare billing, Connecticut enrollment
  • Medicare enrollment name: Orthopaedic Specialty Group PC
  • 81 clinicians in this Medicare group
NPI 1558313767 (203) 337-2600
Orthoconnecticut, PLLC
9.8 mi
Physical Medicine & Rehabilitation
112 MAIN ST
Norwalk, CT 06851
  • Reassigned Medicare billing, Connecticut enrollment
  • 118 clinicians in this Medicare group
NPI 1356906515 (203) 847-4477
Hartford Healthcare Medical Group Specialists, PLLC
50 mi
Surgery
85 SEYMOUR ST STE 415
Hartford, CT 06106
  • Reassigned Medicare billing, Connecticut enrollment
  • 1,921 clinicians in this Medicare group
NPI 1023584216 (860) 246-2071

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
257 services178 patients
X-ray of ankle, minimum of 3 views 73610
An ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.
174 services108 patients
X-ray of foot, minimum of 3 views 73630
An X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.
158 services121 patients
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
48 services12 patients
X-ray of hip, 2-3 views 73502
An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.
31 services23 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
28 services27 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.33/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality69.7
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. REGINA EUM MD
Physical Medicine & Rehabilitation
305 BLACK ROCK TPKE
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600
LAURA M DELLADONNA RPT
Physical Therapist
305 BLACK ROCK TPKE
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600
FIORE F SOVIERO PA
Physician Assistant
305 BLACK ROCK TPKE, ORTHOPAEDIC SPECIALTY GROUP
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600
RAMSEY SABA M.D.
Anesthesiology
305 BLACK ROCK TPKE
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600
ORTHOPAEDIC SPECIALTY GROUP, P.C.
Radiology (Diagnostic Radiology)
305 BLACK ROCK TPKE
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600
NOAH CHARLESTON LAT, ATC
Specialist/Technologist (Athletic Trainer)
305 BLACK ROCK TPKE
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600
ORTHOCONNECTICUT, PLLC
Durable Medical Equipment & Medical Supplies
305 BLACK ROCK TPKE
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600
ROBERT V DAWE MD
Orthopaedic Surgery
305 BLACK ROCK TPKE, OSG
FAIRFIELD, CT 06825
Greater Bridgeport Planning Region (203) 337-2600

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Probasco's NPI number?

The NPI number for William Probasco is 1336503382. It was assigned to this individual provider in the NPPES registry on April 6, 2016.

Where is William Probasco located?

William Probasco practices at 305 Black Rock Tpke, Fairfield, CT 06825. The listed phone number is (203) 337-2600.

What is William Probasco's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Foot and Ankle Surgery, with taxonomy code 207XX0004X.

Is William Probasco enrolled in Medicare?

Yes. William Probasco is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for William Probasco's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Probasco reassigns Medicare benefits to 3 organizations: Orthopaedic Specialty Group, P.C. (Fairfield, CT), Orthoconnecticut, PLLC (Norwalk, CT) and Hartford Healthcare Medical Group Specialists, PLLC (Hartford, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Probasco's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for William Probasco was last updated on October 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.