MAI NGUYEN DYER MD MPH
NPI 1649838707
Obstetrics & Gynecology in Charleston, SC

Active since June 04, 2019PECOS EnrolledAccepts Medicare Assignment
91.1/100
CMS Quality Rating
1027 PHYSICIANS DR STE 110, CHARLESTON, SC 29414(843) 740-6700 Get Directions Write a Review

NPPES record last updated: February 23, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 24, 2023, Jun 4, 2019 (2 updates tracked since 2019).

About Mai Nguyen Dyer Md Mph NPPES

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

MAI NGUYEN DYER MD MPH (NPI 1649838707) is an individual obstetrics & gynecology provider in Charleston, South Carolina, licensed in South Carolina (82671) and active in the NPI registry since June 2019. She is enrolled in Medicare PECOS, is affiliated with Bon Secours-st Francis Xavier Hospital, and maintains a secondary practice location in Columbia.

NPPES Registry Identity

NPI1649838707
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMAI NGUYEN DYERCredential: MD MPH
Location Address1027 PHYSICIANS DR STE 110Charleston, SC 29414-5351
Mailing AddressPo Box 751649Charlotte, NC 28275-1649 · (888) 472-0043 · Fax (843) 724-2440
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJune 4, 2019
Last NPPES UpdateFebruary 23, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 23, 2026
NPI 1649838707 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License Licensed in SC · 82671
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.

1027 PHYSICIANS DR STE 110, Charleston, SC 29414

Secondary Practice Location 1

Location 1Women's Center, 1801 Sunset DriveColumbia, SC 29203 · Phone (803) 434-4127 · Fax (803) 434-4155

Other Identifiers 1

Medicaid826716SC

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Mai Nguyen Dyer Md Mph 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 ID8921330846
PECOS Enrollment IDI20230804000533
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.

Areas of Expertise CMS Part B claims

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.

Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101
This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.
16 services16 patients

Hospital Affiliations CMS Care Compare

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

Bon Secours-St Francis Xavier Hospital

Acute Care Hospitals · Charleston, SC
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420065
Location2095 Henry Tecklenburg DriveCharleston, SC 29414 · Charleston County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29414 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
$124.04 typical visit price
range $53.57 – $163.84
Typical copayment $31.01 (range $13.39 – $40.96)
Most-billed visit code 99204
Established Patient
$67.12 typical visit price
range $16.96 – $133.52
Typical copayment $16.78 (range $4.24 – $33.38)
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.

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.

91.1/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality90.09
Promoting Interoperability100
Improvement Activities40
Cost80.24

Other Providers at the Same Location NPPES 11

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

Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414
Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414
Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414
Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414
Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414
Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414
Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414
Obstetrics & Gynecology
1027 PHYSICIANS DR STE 110
CHARLESTON, SC 29414

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 Mai Dyer's NPI number?

The NPI number for Mai Dyer is 1649838707. It was assigned to this individual provider in the NPPES registry on June 4, 2019.

Where is Mai Dyer located?

Mai Dyer practices at 1027 Physicians Dr Ste 110, Charleston, SC 29414. The listed phone number is (843) 740-6700.

What is Mai Dyer's specialty?

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

Is Mai Dyer enrolled in Medicare?

Yes. Mai Dyer 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.

What insurance does Mai Dyer accept?

Health plans from BlueCross BlueShield of South Carolina, First Choice Next, Molina Healthcare and UnitedHealthcare list Mai Dyer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mai Dyer affiliated with any hospitals?

According to CMS data, Mai Dyer is affiliated with Bon Secours-St Francis Xavier Hospital.

When was this NPI record last updated?

The NPPES record for Mai Dyer was last updated on February 23, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.