DR. ALEXANDRIA SARAH MASON M.D.
NPI 1225611650
Obstetrics & Gynecology in West Orange, NJ

Q: What is Alexandria Mason's NPI number?

The NPI number for Alexandria Mason is 1225611650. It was assigned to this individual provider in the NPPES registry on May 3, 2021.

Q: What is Alexandria Mason's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Alexandria Mason was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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 May 03, 2021PECOS EnrolledAccepts Medicare Assignment

101 OLD SHORT HILLS RD STE 430, WEST ORANGE, NJ 07052(732) 996-0067 Get Directions Write a Review

NPPES record last updated: July 1, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 1, 2025, May 3, 2021 (2 updates tracked since 2021).

On this page

About Dr. Alexandria Sarah Mason M.d. NPPES

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

DR. ALEXANDRIA SARAH MASON M.D. (NPI 1225611650) is an individual obstetrics & gynecology provider in West Orange, New Jersey, licensed in New Jersey (25MA12752500) and active in the NPI registry since May 2021. She is enrolled in Medicare PECOS, is affiliated with Cooperman Barnabas Medical Center, and maintains a secondary practice location in Montclair.

NPPES Registry Identity

NPI1225611650

Entity TypeIndividualFemale

Primary Taxonomy207V00000X

Provider Legal NameDR. ALEXANDRIA SARAH MASONCredential: M.D.

Location Address101 OLD SHORT HILLS RD STE 430West Orange, NJ 07052-1023

Mailing Address101 Old Short Hills Rd Ste 430West Orange, NJ 07052-1023

Phone(732) 996-0067

Sole ProprietorNo

Medical School CMSWest Virginia University School Of MedicineGraduated 2021

Enumeration DateMay 3, 2021

Last NPPES UpdateJuly 1, 20252 updates tracked since enumeration

NPPES CertifiedJuly 1, 2025

✔ NPI 1225611650 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in NJ · 25MA12752500

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

101 OLD SHORT HILLS RD STE 430, West Orange, NJ 07052

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Secondary Practice Location 1

Location 113 Washington St Unit BMontclair, NJ 07042-4521 · Phone (202) 441-0624

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. Alexandria Sarah Mason 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 ID143726133

PECOS Enrollment IDI20250930000316

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 Reassignment

Medicare enrollment records show Alexandria Mason reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Barnabas Health Medical Group PC

8.4 mi

Specialist

225 WILLIAMSON ST
Elizabeth, NJ 07202

Reassigned Medicare billing, New Jersey enrollment
1,894 clinicians in this Medicare group

NPI 1841557246 (888) 724-7123

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Cooperman Barnabas Medical Center

Acute Care Hospitals · Livingston, NJ

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310076

Location94 Old Short Hills RoadLivingston, NJ 07039 · Essex County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07052 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

$144.86 typical visit price

range $63.84 – $190.92

Typical copayment $36.21 (range $15.96 – $47.73)

Most-billed visit code 99204

Established Patient

$79.09 typical visit price

range $20.97 – $155.92

Typical copayment $19.77 (range $5.24 – $38.98)

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.

Other Providers at the Same Location NPPES

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

KARINA KLYATIS PULEO

Optometrist

101 OLD SHORT HILLS RD STE 430
WEST ORANGE, NJ 07052

Essex County (973) 325-3300

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 Alexandria Mason's NPI number?

The NPI number for Alexandria Mason is 1225611650. It was assigned to this individual provider in the NPPES registry on May 3, 2021.

Where is Alexandria Mason located?

Alexandria Mason practices at 101 Old Short Hills Rd Ste 430, West Orange, NJ 07052. The listed phone number is (732) 996-0067.

What is Alexandria Mason's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Alexandria Mason enrolled in Medicare?

Yes. Alexandria Mason 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 organization bills Medicare for Alexandria Mason's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexandria Mason reassigns Medicare benefits to Barnabas Health Medical Group PC (Elizabeth, NJ). The 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 Alexandria Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Alexandria Mason affiliated with any hospitals?

According to CMS data, Alexandria Mason is affiliated with Cooperman Barnabas Medical Center.

When was this NPI record last updated?

The NPPES record for Alexandria Mason was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.