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DR. MILAGROS DIAZ MD
NPI 1669524765
Obstetrics & Gynecology - Gynecology in Woodbury, NY

Active since January 17, 2007PECOS EnrolledAccepts Medicare Assignment
157 FROEHLICH FARM BOULEVARD, WOODBURY, NY 11797(516) 921-3168(516) 921-0292 Get Directions Write a Review

NPPES record last updated: June 24, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Milagros Diaz Md NPPES

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

DR. MILAGROS DIAZ MD (NPI 1669524765) is an individual gynecology provider in Woodbury, New York, licensed in New York (162412) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, is affiliated with North Shore University Hospital, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (1982).

NPPES Registry Identity

NPI1669524765
Entity TypeIndividualFemale
Primary Taxonomy207VG0400X
Provider Legal NameDR. MILAGROS DIAZCredential: MD
Location Address157 FROEHLICH FARM BOULEVARDWoodbury, NY 11797-2906
Mailing Address157 Froehlich Farm BoulevardWoodbury, NY 11797-2906 · (516) 921-3168 · Fax (516) 921-0292
Phone(516) 921-3168
Fax(516) 921-0292
Sole ProprietorNo
Medical School CMSState University Of New York At Stony Brook, School Of MedicineGraduated 1982
Enumeration DateJanuary 17, 2007
Last NPPES UpdateJune 24, 2021
NPPES CertifiedJune 24, 2021
✔ NPI 1669524765 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & Gynecology · GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207VG0400X
License✔ Licensed in NY · 162412
Definition
A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. Source: National Uniform Claim Committee
Also ListedObstetrics & Gynecology · ObstetricsTaxonomy 207VX0000X · License 162412 (NY)
157 FROEHLICH FARM BOULEVARD, Woodbury, NY 11797
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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. Milagros Diaz 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 ID42307613
PECOS Enrollment IDI20071214000349
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

3

Medicare enrollment records show Milagros Diaz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Huntington Hospital Dolan Family Health Center
6.1 mi
Health Service
284 PULASKI RD
Greenlawn, NY 11740
  • Reassigned Medicare billing, New York enrollment
  • 67 clinicians in this Medicare group
NPI 1578593588 (631) 425-5250
North Shore Lij Medical Group At North Nassau, PC
9.0 mi
Cardiovascular Disease
70 GLEN ST, SUITE 200
Glen Cove, NY 11542
  • Reassigned Medicare billing, New York enrollment
  • 59 clinicians in this Medicare group
NPI 1700175270 (516) 484-7893
North Shore-Lij Medical PC
12 mi
Urology
1010 NORTHERN BLVD STE 110
Great Neck, NY 11021
  • Reassigned Medicare billing, New York enrollment
  • 9,353 clinicians in this Medicare group
NPI 1053688572 (516) 321-7400

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 33D1004693

Milagros D Diaz Md,pc · Woodbury, NY
Expired · Oct 2, 2026
CLIA Number33D1004693
Laboratory TypePhysician Office
Certificate Effective DateOctober 3, 2024
Certificate Expiration DateOctober 2, 2026
Laboratory DirectorMilagros D. Diaz,md
Laboratory Phone(516) 921-3168
Laboratory LocationMilagros D Diaz Md,pc157 Froehlich Farm Blvd, Woodbury, NY 11797
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 6

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.
252 services251 patients
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.
226 services226 patients
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091
A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.
195 services195 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.
94 services73 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
56 services56 patients
Fitting and insertion of vaginal support device 57160
A vaginal support device is a medical tool used to provide support to pelvic organs. During the procedure, a healthcare professional will gently place the device into the appropriate area. This is typically done in a clinical setting and can help with various health conditions.
29 services11 patients

Hospital Affiliations CMS Care Compare 4

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

North Shore University Hospital

Acute Care Hospitals · Manhasset, NY
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330106
Location300 Community DriveManhasset, NY 11030 · Nassau County
Emergency services Birthing friendly

St Francis Hospital - The Heart Center

Acute Care Hospitals · Roslyn, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330182
Location100 Port Washington BoulevardRoslyn, NY 11576 · Nassau County
Emergency services

Good Samaritan Hospital Medical Center

Acute Care Hospitals · West Islip, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number330286
Location1000 Montauk HighwayWest Islip, NY 11795 · Suffolk County
Emergency services Birthing friendly

Plainview Hospital

Acute Care Hospitals · Plainview, NY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330331
Location888 Old Country RoadPlainview, NY 11803 · Nassau County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11797 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$83.44 typical visit price
range $21.66 – $164.45
Typical copayment $20.86 (range $5.41 – $41.11)
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.

MILAGROS D. DIAZ, MD, PC
Obstetrics & Gynecology
157 FROEHLICH FARM BOULEVARD
WOODBURY, NY 11797
Nassau County (516) 921-3168

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 Milagros Diaz's NPI number?

The NPI number for Milagros Diaz is 1669524765. It was assigned to this individual provider in the NPPES registry on January 17, 2007.

Where is Milagros Diaz located?

Milagros Diaz practices at 157 Froehlich Farm Boulevard, Woodbury, NY 11797. The listed phone number is (516) 921-3168.

What is Milagros Diaz's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecology, with taxonomy code 207VG0400X.

Is Milagros Diaz enrolled in Medicare?

Yes. Milagros Diaz 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 Milagros Diaz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Milagros Diaz reassigns Medicare benefits to 3 organizations: Huntington Hospital Dolan Family Health Center (Greenlawn, NY), North Shore Lij Medical Group At North Nassau, PC (Glen Cove, NY) and North Shore-Lij Medical PC (Great Neck, NY). 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 Milagros Diaz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Milagros Diaz affiliated with any hospitals?

According to CMS data, Milagros Diaz is affiliated with North Shore University Hospital, St Francis Hospital - The Heart Center, Good Samaritan Hospital Medical Center and Plainview Hospital.

When was this NPI record last updated?

The NPPES record for Milagros Diaz was last updated on June 24, 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.