DR. ARIEL A WILLIAMS M.D.
NPI 1811211337
Orthopaedic Surgery in New Haven, CT

Q: What is Ariel Williams's NPI number?

The NPI number for Ariel Williams is 1811211337. It was assigned to this individual provider in the NPPES registry on March 26, 2010.

Q: What is Ariel Williams's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Q: When was this NPI record last updated?

The NPPES record for Ariel Williams was last updated on September 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since March 26, 2010PECOS EnrolledAccepts Medicare Assignment

47 COLLEGE ST, NEW HAVEN, CT 06510(877) 925-3637 Get Directions Write a Review

NPPES record last updated: September 5, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 5, 2024, Feb 2, 2021, May 26, 2017 (3 updates tracked since 2017).

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About Dr. Ariel A Williams M.d. NPPES

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

DR. ARIEL A WILLIAMS M.D. (NPI 1811211337) is an individual orthopaedic surgery provider in New Haven, Connecticut, licensed in Minnesota (62129) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS, maintains 8 additional practice locations, and is a graduate of Stanford University School Of Medicine (2010).

NPPES Registry Identity

NPI1811211337

Entity TypeIndividualFemale

Primary Taxonomy207X00000X

Provider Legal NameDR. ARIEL A WILLIAMSCredential: M.D.

Location Address47 COLLEGE STNew Haven, CT 06510-3209

Mailing Address47 College StNew Haven, CT 06510-3209 · (877) 925-3637

Phone(877) 925-3637

Sole ProprietorNo

Medical School CMSStanford University School Of MedicineGraduated 2010

Enumeration DateMarch 26, 2010

Last NPPES UpdateSeptember 5, 20243 updates tracked since enumeration

NPPES CertifiedSeptember 5, 2024

✔ NPI 1811211337 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207X00000X

Licenses✔ Licensed in MN · 62129✔ Licensed in CT · 054105✔ Licensed in CO · CDRH.0000868

Definition

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Also ListedOrthopaedic Surgery · Hand SurgeryTaxonomy 207XS0106X · License 054105 (CT)

47 COLLEGE ST, New Haven, CT 06510

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Secondary Practice Locations 8

Location 15520 Park AveTrumbull, CT 06611-3463 · Phone (877) 925-3637

Location 2300 Seaside AveMilford, CT 06460-4603 · Phone (877) 925-3637

Location 3267 Grant StBridgeport, CT 06610-2805 · Phone (877) 925-3637

Location 4800 Howard AveNew Haven, CT 06519-1369 · Phone (877) 925-3637

Location 51450 Chapel StNew Haven, CT 06511-4405 · Phone (877) 925-3637

Location 620 York StNew Haven, CT 06510-3220 · Phone (877) 925-3637

Location 71152 Kings Highway CutoffFairfield, CT 06824-5271 · Phone (877) 925-3637

Location 8849 Boston Post RdMilford, CT 06460-3537 · Phone (877) 925-3637

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. Ariel A Williams M.d. 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 ID2860641453

PECOS Enrollment IDI20241106001449

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

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

Yale University

0.3 mi

Advanced Practice Midwife

100 CHURCH ST S STE 200, YALE SCHOOL OF NURSING
New Haven, CT 06519

Reassigned Medicare billing, Connecticut enrollment
3,728 clinicians in this Medicare group

NPI 1124148887 (203) 737-5432

Fairview Express Care

1,038 mi

Pediatric Rehabilitation Medicine

9680 TAMARACK RD, SUITE 130
Woodbury, MN 55125

Reassigned Medicare billing, Minnesota enrollment
3,633 clinicians in this Medicare group

NPI 1700235587 (612) 273-1172

Fairview Health Services

1,046 mi

General Acute Care Hospital

5200 FAIRVIEW BLVD
Wyoming, MN 55092

Reassigned Medicare billing, Minnesota enrollment
4,038 clinicians in this Medicare group

NPI 1083692941 (651) 982-7000

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.

Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702

This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.

121 services33 patients

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.

114 services77 patients

X-ray of wrist, minimum of 3 views 73110

An X-ray of the wrist, minimum of 3 views, is a diagnostic procedure that uses radiation to create images of your wrist from different angles. This helps detect fractures, infections, or other abnormalities for accurate diagnosis and treatment planning.

49 services24 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

46 services46 patients

X-ray of hand, minimum of 3 views 73130

An X-ray of the hand, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones in your hand from different angles. This helps in diagnosing fractures, infections, arthritis, or other abnormalities. It's quick and painless.

28 services20 patients

Injection into tendon or ligament 20550

An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.

23 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$93.86 typical visit price

range $60.82 – $183.10

Typical copayment $23.46 (range $15.20 – $45.77)

Most-billed visit code 99203

Established Patient

$75.55 typical visit price

range $19.76 – $149.26

Typical copayment $18.88 (range $4.94 – $37.31)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Wrist hand orthosis, wrist extension control cock-up, non molded, prefabricated, off-the-shelf L3908

DME-Orthotic Devices · category DF000N

2 suppliers20 claims21 services$41.28 avg. paid by Medicare

Hand finger orthosis, without joints, may include soft interface, straps, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise L3923

DME-Orthotic Devices · category DF000N

3 suppliers12 claims13 services$59.23 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 7

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

RAJ JITENDRA GALA MD

Orthopaedic Surgery (Orthopaedic Surgery of the Spine)