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DR. MARY SARA BAKER M.D.
NPI 1134431935
Pediatrics in Myrtle Beach, SC

Active since July 08, 2010PECOS EnrolledAccepts Medicare Assignment
97.02/100
CMS Quality Rating
4220 CAROLINA EXCHANGE DR, MYRTLE BEACH, SC 29579(843) 663-8000 Get Directions Write a Review

NPPES record last updated: March 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 10, 2026, Jul 17, 2024 (2 updates tracked since 2024).

About Dr. Mary Sara Baker M.d. NPPES

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

DR. MARY SARA BAKER M.D. (NPI 1134431935) is an individual pediatrics provider in Myrtle Beach, South Carolina, licensed in South Carolina (MD36811) and active in the NPI registry since July 2010. She is enrolled in Medicare PECOS, is affiliated with Tidelands Georgetown Memorial Hospital, and is a graduate of Other (2010).

NPPES Registry Identity

NPI1134431935
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. MARY SARA BAKERCredential: M.D.
Location Address4220 CAROLINA EXCHANGE DRMyrtle Beach, SC 29579-4220
Mailing AddressPo Box 547Little River, SC 29566-0547 · (843) 663-8000
Phone(843) 663-8000
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateJuly 8, 2010
Last NPPES UpdateMarch 10, 20262 updates tracked since enumeration
NPPES CertifiedMarch 10, 2026
✔ NPI 1134431935 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in SC · MD36811
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD36811 (SC)
4220 CAROLINA EXCHANGE DR, Myrtle Beach, SC 29579
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of North Carolina and more.Insurance ›

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. Mary Sara Baker 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 ID3779705231
PECOS Enrollment IDI20141118000683
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

4

Medicare enrollment records show Mary Baker reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Little River Medical Center, Inc
Same address
Federally Qualified Health Center (FQHC)
4220 CAROLINA EXCHANGE BLVD
Myrtle Beach, SC 29579
NPI 1346638483 (843) 663-8000
Waccamaw Community Hospital
15 mi
General Acute Care Hospital
4070 HIGHWAY 17 BYPASS
Murrells Inlet, SC 29576
  • Reassigned Medicare billing, South Carolina enrollment
  • 249 clinicians in this Medicare group
NPI 1972503910 (843) 652-1000
St James Health And Wellness Inc
26 mi
Federally Qualified Health Center (FQHC)
8189 CHOPPEE RD
Georgetown, SC 29440
  • Reassigned Medicare billing, South Carolina enrollment
  • 21 clinicians in this Medicare group
NPI 1447382692 (843) 545-8723
Georgetown Memorial Hospital
32 mi
General Acute Care Hospital
606 BLACK RIVER RD
Georgetown, SC 29440
  • Reassigned Medicare billing, South Carolina enrollment
  • 261 clinicians in this Medicare group
NPI 1982604021 (843) 527-7000

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 5

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
280 services261 patients
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 99309
A follow-up nursing facility visit per day is a daily check-in by a healthcare professional. This 25-minute visit typically involves monitoring your health progress, addressing any concerns, and adjusting treatment plans as necessary. It's a vital part of ensuring your ongoing wellbeing.
51 services48 patients
Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306
An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.
32 services32 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
31 services31 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
16 services16 patients

Hospital Affiliations CMS Care Compare 2

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

Tidelands Georgetown Memorial Hospital

Acute Care Hospitals · Georgetown, SC
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number420020
Location606 Black River Rd Drawer 1718Georgetown, SC 29440 · Georgetown County
Emergency services

Bon Secours St Marys Hospital

Acute Care Hospitals · Richmond, VA
4/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number490059
Location5801 Bremo RdRichmond, VA 23226 · Richmond City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29579 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
$83.18 typical visit price
range $53.57 – $163.84
Typical copayment $20.79 (range $13.39 – $40.96)
Most-billed visit code 99203
Established Patient
$95.12 typical visit price
range $16.96 – $133.52
Typical copayment $23.78 (range $4.24 – $33.38)
Most-billed visit code 99214
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.

97.02/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality94.05
Improvement Activities40

Reported Quality Measures

Advance Care Plan
86%479 patients4/55-star benchmark: 100%
Breast Cancer Screening
82%321 patients4/55-star benchmark: 100%
Colorectal Cancer Screening
83%533 patients4/55-star benchmark: 100%
Controlling High Blood Pressure
68%259 patients4/55-star benchmark: 91%
Diabetes: Hemoglobin A1c (HbA1c) Poor Control (>9%)
Lower rates are better for this measure.
9%86 patients4/55-star benchmark: 98%
Documentation of Current Medications in the Medical Record
97%2,222 patients4/55-star benchmark: 100%
Screening for Osteoporosis for Women Aged 65-85 Years of Age
83%275 patients4/55-star benchmark: 98%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 14

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
12 suppliers36 claims74 services$5.98 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
7 suppliers15 claims16 services$1.06 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
7 suppliers22 claims22 services$43.39 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
4 suppliers13 claims13 services$113.82 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
4 suppliers12 claims36 services$42.50 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
4 suppliers14 claims75 services$22.17 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 15

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

DR. EUNICE LUZ GUZMAN MD
Internal Medicine (Infectious Disease)
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8371
LINDSEY ROSE NELSON LISW-CP
Social Worker (Clinical)
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8000
DR. SANDRA M. HALTERMAN OS, DDS
Dentist (Oral and Maxillofacial Surgery)
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8000
DR. VISHALI AYGARI D.M.D
Dentist (General Practice)
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8000
LITTLE RIVER MEDICAL CENTER, INC.
Clinic/Center (Multi-Specialty)
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8000
LITTLE RIVER MEDICAL CENTER, INC.
Clinic/Center (Multi-Specialty)
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8000
MS. TRICIA PAYNE LISW-CP
Social Worker (Clinical)
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8000
LITTLE RIVER MEDICAL CENTER, INC.
Clinic/Center (Federally Qualified Health Center (FQHC))
4220 CAROLINA EXCHANGE DR
MYRTLE BEACH, SC 29579
Horry County (843) 663-8000

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 Mary Baker's NPI number?

The NPI number for Mary Baker is 1134431935. It was assigned to this individual provider in the NPPES registry on July 8, 2010.

Where is Mary Baker located?

Mary Baker practices at 4220 Carolina Exchange Dr, Myrtle Beach, SC 29579. The listed phone number is (843) 663-8000.

What is Mary Baker's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mary Baker enrolled in Medicare?

Yes. Mary Baker 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 Mary Baker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Baker reassigns Medicare benefits to 4 organizations: Little River Medical Center, Inc (Myrtle Beach, SC), Waccamaw Community Hospital (Murrells Inlet, SC), St James Health And Wellness Inc (Georgetown, SC) and Georgetown Memorial Hospital (Georgetown, SC). 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 Mary Baker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Baker accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and First Choice Next list Mary Baker 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 Mary Baker affiliated with any hospitals?

According to CMS data, Mary Baker is affiliated with Tidelands Georgetown Memorial Hospital and Bon Secours St Marys Hospital.

When was this NPI record last updated?

The NPPES record for Mary Baker was last updated on March 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.