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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MADELYN B HERNANDEZ
NPI 1740784255
Surgery in Marietta, OH

Active since March 20, 2018PECOS Enrolled
400 MATTHEW ST STE B-1, MARIETTA, OH 45750(740) 376-5501 Get Directions Write a Review

NPPES record last updated: October 21, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 12, 2025, Jun 12, 2024, Nov 7, 2023 and 2 more (5 updates tracked since 2018).

About Madelyn B Hernandez NPPES

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

MADELYN B HERNANDEZ (NPI 1740784255) is an individual surgery provider in Marietta, Ohio, licensed in Ohio (35.147557) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, is affiliated with Marietta Memorial Hospital, and maintains a secondary practice location in Belpre.

NPPES Registry Identity

NPI1740784255
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameMADELYN B HERNANDEZ
Location Address400 MATTHEW ST STE B-1Marietta, OH 45750-1644
Mailing Address655 Eden Park Dr Apt 519Cincinnati, OH 45202-6065 · (786) 877-8804
Phone(740) 376-5501
Sole ProprietorYes
Medical School CMSGeorge Washington University School Of MedicineGraduated 2018
Enumeration DateMarch 20, 2018
Last NPPES UpdateOctober 21, 20265 updates tracked since enumeration
NPPES CertifiedOctober 21, 2026
✔ NPI 1740784255 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in OH · 35.147557
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
400 MATTHEW ST STE B-1, Marietta, OH 45750
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Secondary Practice Location 1

Location 11818 Washington Blvd Ste GBelpre, OH 45714-2080 · Phone (740) 568-5384 · Fax (740) 571-4739

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Antidote Health Plan of Ohio, Inc., MedMutual.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

Madelyn B Hernandez 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 ID8729333091
PECOS Enrollment IDI20240805002326
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

2

Medicare enrollment records show Madelyn Hernandez reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Marietta Memorial Hospital
Same address
General Acute Care Hospital
401 MATTHEW ST
Marietta, OH 45750
  • Reassigned Medicare billing, Ohio enrollment
  • 411 clinicians in this Medicare group
NPI 1215936927 (740) 374-1413
Selby General Hospital
1.3 mi
Critical Access
1106 COLEGATE DR
Marietta, OH 45750
  • Reassigned Medicare billing, Ohio enrollment
  • 247 clinicians in this Medicare group
NPI 1124073465 (740) 568-2040

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.

Marietta Memorial Hospital

Acute Care Hospitals · Marietta, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number360147
Location401 Matthew StreetMarietta, OH 45750 · Washington County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 45750 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
$84.72 typical visit price
range $54.34 – $166.65
Typical copayment $21.18 (range $13.58 – $41.66)
Most-billed visit code 99203
Established Patient
$68.07 typical visit price
range $17.10 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
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.

VIDAS DUMASIUS MD
Surgery (Plastic and Reconstructive Surgery)
400 MATTHEW ST STE B-1
MARIETTA, OH 45750
Washington County (740) 376-5501

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 Madelyn Hernandez's NPI number?

The NPI number for Madelyn Hernandez is 1740784255. It was assigned to this individual provider in the NPPES registry on March 20, 2018.

Where is Madelyn Hernandez located?

Madelyn Hernandez practices at 400 Matthew St Ste B-1, Marietta, OH 45750. The listed phone number is (740) 376-5501.

What is Madelyn Hernandez's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Madelyn Hernandez enrolled in Medicare?

Yes. Madelyn Hernandez 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 Madelyn Hernandez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Madelyn Hernandez reassigns Medicare benefits to 2 organizations: Marietta Memorial Hospital (Marietta, OH) and Selby General Hospital (Marietta, OH). 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 Madelyn Hernandez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Madelyn Hernandez accept?

Health plans from Antidote Health Plan of Ohio, Inc. and MedMutual list Madelyn Hernandez 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 Madelyn Hernandez affiliated with any hospitals?

According to CMS data, Madelyn Hernandez is affiliated with Marietta Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Madelyn Hernandez was last updated on October 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days 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.