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DR. GREGORY MICHAEL HAIDEMENOS MD
NPI 1689080129
Internal Medicine - Hematology & Oncology in Hilton Head Island, SC

Active since July 04, 2014PECOS EnrolledAccepts Medicare Assignment
64.77/100
CMS Quality Rating
45 HOSPITAL CENTER CMNS, HILTON HEAD ISLAND, SC 29926(843) 689-2895(843) 689-9270 Get Directions Write a Review

NPPES record last updated: June 30, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 30, 2021, May 2, 2018 (2 updates tracked since 2018).

About Dr. Gregory Michael Haidemenos Md NPPES

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

DR. GREGORY MICHAEL HAIDEMENOS MD (NPI 1689080129) is an individual hematology & oncology provider in Hilton Head Island, South Carolina, licensed in South Carolina (MD51996) and active in the NPI registry since July 2014. He is enrolled in Medicare PECOS, is affiliated with Candler Hospital, and maintains a secondary practice location in Bluffton.

NPPES Registry Identity

NPI1689080129
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. GREGORY MICHAEL HAIDEMENOSCredential: MD
Location Address45 HOSPITAL CENTER CMNSHilton Head Island, SC 29926-2837
Mailing Address45 Hospital Center CmnsHilton Head Island, SC 29926-2837 · (843) 689-2895 · Fax (843) 689-9270
Phone(843) 689-2895
Fax(843) 689-9270
Sole ProprietorNo
Medical School CMSOtherGraduated 2014
Enumeration DateJuly 4, 2014
Last NPPES UpdateJune 30, 20212 updates tracked since enumeration
NPPES CertifiedJune 30, 2021
✔ NPI 1689080129 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in SC · MD51996
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
45 HOSPITAL CENTER CMNS, Hilton Head Island, SC 29926
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Other Names 1

Professional Name (2)Dr. Gregory Michael Haidemenos M.d.

Secondary Practice Location 1

Location 1100 Buckwalter Place Blvd Ste 130Bluffton, SC 29910-5023 · Phone (843) 836-7101 · Fax (843) 836-7112

Accepted Insurance

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

Dr. Gregory Michael Haidemenos Md 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 ID8729393632
PECOS Enrollment IDI20210715000447
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 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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
1,662 services548 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
276 services276 patients
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025
A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
253 services128 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
187 services108 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.
89 services86 patients

Hospital Affiliations CMS Care Compare 5

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

Candler Hospital

Acute Care Hospitals · Savannah, GA
1/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number110024
Location5353 Reynolds StreetSavannah, GA 31412 · Chatham County
Emergency services Birthing friendly

St Joseph's Hospital - Savannah

Acute Care Hospitals · Savannah, GA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number110043
Location11705 Mercy BoulevardSavannah, GA 31419 · Chatham County
Emergency services

Beaufort County Memorial Hospital

Acute Care Hospitals · Beaufort, SC
4/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number420067
Location955 Ribaut RdBeaufort, SC 29902 · Beaufort County
Emergency services Birthing friendly

Hilton Head Regional Medical Center

Acute Care Hospitals · Hilton Head Island, SC
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number420080
Location25 Hospital Center BlvdHilton Head Island, SC 29925 · Beaufort County
Emergency services Birthing friendly

Coastal Carolina Hospital

Acute Care Hospitals · Hardeeville, SC
2/5 CMS rating
OwnershipProprietary
CMS Certification Number420101
Location1000 Medical Center DriveHardeeville, SC 29927 · Jasper County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29926 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
$163.84 typical visit price
range $53.57 – $163.84
Typical copayment $40.96 (range $13.39 – $40.96)
Most-billed visit code 99205
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.

64.77/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality62.53
Improvement Activities40
Cost32.54

Referred Medical Equipment & Supplies CMS DME claims 3

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

Capecitabine, oral, 500 mg J8521
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier44 claims3,756 services$0.71 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511
Treatment-Chemotherapy · category RH012N
3 suppliers16 claims16 services$18.97 avg. paid by Medicare
Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512
Treatment-Chemotherapy · category RH012N
2 suppliers42 claims44 services$12.33 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 5

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

DR. GARY W THOMAS MD
Internal Medicine (Hematology & Oncology)
45 HOSPITAL CENTER CMNS
HILTON HEAD ISLAND, SC 29926
Beaufort County (843) 699-2895
CANDLER HOSPITAL, INC.
Pharmacy
45 HOSPITAL CENTER CMNS
HILTON HEAD, SC 29926
Beaufort County (843) 689-2895
MRS. KIMBERLY TODD APRN
Nurse Practitioner (Family)
45 HOSPITAL CENTER CMNS
HILTON HEAD ISLAND, SC 29926
Beaufort County (843) 689-2895
KATHLEEN CONNOR REID ANP-BC
Nurse Practitioner (Adult Health)
45 HOSPITAL CENTER CMNS
HILTON HEAD ISLAND, SC 29926
Beaufort County (843) 689-2895
TORE MICHELLE FLAVIN FNP
Nurse Practitioner
45 HOSPITAL CENTER CMNS
HILTON HEAD ISLAND, SC 29926
Beaufort County (843) 689-2895

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 Gregory Haidemenos's NPI number?

The NPI number for Gregory Haidemenos is 1689080129. It was assigned to this individual provider in the NPPES registry on July 4, 2014. The provider is also known as Dr. Gregory Michael Haidemenos M.D..

Where is Gregory Haidemenos located?

Gregory Haidemenos practices at 45 Hospital Center Cmns, Hilton Head Island, SC 29926. The listed phone number is (843) 689-2895.

What is Gregory Haidemenos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Gregory Haidemenos enrolled in Medicare?

Yes. Gregory Haidemenos 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 Gregory Haidemenos accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 2 other insurers list Gregory Haidemenos 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 Gregory Haidemenos affiliated with any hospitals?

According to CMS data, Gregory Haidemenos is affiliated with Candler Hospital, St Joseph's Hospital - Savannah, Beaufort County Memorial Hospital, Hilton Head Regional Medical Center and Coastal Carolina Hospital.

When was this NPI record last updated?

The NPPES record for Gregory Haidemenos was last updated on June 30, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.