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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.

DR. GREGG GIANNINA MD
NPI 1285704213
Obstetrics & Gynecology - Maternal & Fetal Medicine in Neptune, NJ

Active since November 08, 2006PECOS EnrolledAccepts Medicare Assignment
19 DAVIS AVE FL 7, NEPTUNE, NJ 07753(732) 776-4755 Get Directions Write a Review

NPPES record last updated: September 15, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 15, 2026, Oct 5, 2023 (2 updates tracked since 2023).

About Dr. Gregg Giannina Md NPPES

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

DR. GREGG GIANNINA MD (NPI 1285704213) is an individual maternal & fetal medicine provider in Neptune, New Jersey, licensed in New Jersey (25MA5823400) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Capital Health Medical Center - Hopewell, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1285704213
Entity TypeIndividualMale
Primary Taxonomy207VM0101X
Provider Legal NameDR. GREGG GIANNINACredential: MD
Location Address19 DAVIS AVE FL 7Neptune, NJ 07753-4488
Mailing Address331 Newman Springs Rd Ste 220Red Bank, NJ 07701-5792
Phone(732) 776-4755
Sole ProprietorNo
Medical School CMSRutgers New Jersey Medical SchoolGraduated 1991
Enumeration DateNovember 8, 2006
Last NPPES UpdateSeptember 15, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2026
✔ NPI 1285704213 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
Licenses✔ Licensed in NJ · 25MA5823400✔ Licensed in AZ · 40403
Definition
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
19 DAVIS AVE FL 7, Neptune, NJ 07753
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11401 Whitehorse Mercerville Rd Ste 220Hamilton, NJ 08619-3835 · Phone (609) 537-7252
Location 21 Capital WayPennington, NJ 08534-2520 · Phone (609) 537-7252

Other Identifiers 1

Medicaid8467307NJ

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.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. Gregg Giannina 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 ID8628064441
PECOS Enrollment IDI20040426000233
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

5

Medicare enrollment records show Gregg Giannina reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Saint Peter's Specialty Physicians, P.C.
13 mi
Gastroenterology
500 RIVER AVE STE 110
Lakewood, NJ 08701
  • Reassigned Medicare billing, New Jersey enrollment
  • Medicare enrollment name: Saint Peter's Specialty Physicians PC
  • 58 clinicians in this Medicare group
NPI 1861894982 (732) 339-7880
Saint Peter's Healthcare System Physician Associates
30 mi
General Practice
254 EASTON AVE
New Brunswick, NJ 08901
  • Reassigned Medicare billing, New Jersey enrollment
  • 105 clinicians in this Medicare group
NPI 1548569361 (732) 745-6651
Saint Peter's University Hospital
30 mi
Clinical
254 EASTON AVE, MANAGED CARE
New Brunswick, NJ 08901
  • Reassigned Medicare billing, New Jersey enrollment
  • Medicare enrollment name: Saint Peters University Hospital
  • 325 clinicians in this Medicare group
NPI 1376079590 (732) 565-5453
Capital Health Medical Group
38 mi
Internal Medicine
750 BRUNSWICK AVE
Trenton, NJ 08638
  • Reassigned Medicare billing, New Jersey enrollment
  • 581 clinicians in this Medicare group
NPI 1437516887 (609) 815-7829
District Medical Group, Inc
2,130 mi
Psychiatry
570 W BROWN RD, ADMINISTRATION
Mesa, AZ 85201
  • Reassigned Medicare billing, Arizona enrollment
  • 1,490 clinicians in this Medicare group
NPI 1124251020 (480) 344-2000

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.

Capital Health Medical Center - Hopewell

Acute Care Hospitals · Pennington, NJ
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number310044
LocationOne Capital WayPennington, NJ 08534 · Mercer County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07753 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
$140.34 typical visit price
range $61.59 – $185.05
Typical copayment $35.08 (range $15.39 – $46.26)
Most-billed visit code 99204
Established Patient
$76.45 typical visit price
range $20.08 – $150.98
Typical copayment $19.11 (range $5.02 – $37.74)
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 20

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

HELEN KARWOWSKA M.D.
Pediatrics (Neonatal-Perinatal Medicine)
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-4524
DR. ANN S ROSS M.D.
Pediatrics (Neonatal-Perinatal Medicine)
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-4524
BLAIR FAITH GERMAIN M.D.
Pediatrics (Neonatal-Perinatal Medicine)
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-4524
CASEY MARKS MS
Genetic Counselor, MS
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-3681
ALLYSON LEE THOMAS
Nurse Practitioner (Family)
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-3797
DR. NINA STELLA JACOBSON MD
Obstetrics & Gynecology (Urogynecology and Reconstructive Pelvic Surgery)
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-3797
MISS CHRISTINE TORRES MSN, APN, FNP-BC
Nurse Practitioner
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-3797
EDUARDO R BAUTISTA MD
Pediatrics (Neonatal-Perinatal Medicine)
19 DAVIS AVE FL 7
NEPTUNE, NJ 07753
Monmouth County (732) 776-4524

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 Gregg Giannina's NPI number?

The NPI number for Gregg Giannina is 1285704213. It was assigned to this individual provider in the NPPES registry on November 8, 2006.

Where is Gregg Giannina located?

Gregg Giannina practices at 19 Davis Ave Fl 7, Neptune, NJ 07753. The listed phone number is (732) 776-4755.

What is Gregg Giannina's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

Is Gregg Giannina enrolled in Medicare?

Yes. Gregg Giannina 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 Gregg Giannina's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregg Giannina reassigns Medicare benefits to 5 organizations: Saint Peter's Specialty Physicians, P.C. (Lakewood, NJ), Saint Peter's Healthcare System Physician Associates (New Brunswick, NJ), Saint Peter's University Hospital (New Brunswick, NJ), Capital Health Medical Group (Trenton, NJ) and District Medical Group, Inc (Mesa, AZ). 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 Gregg Giannina's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregg Giannina accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Gregg Giannina 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 Gregg Giannina affiliated with any hospitals?

According to CMS data, Gregg Giannina is affiliated with Capital Health Medical Center - Hopewell.

When was this NPI record last updated?

The NPPES record for Gregg Giannina was last updated on September 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 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.