DR. GUILLERMO ORTIZ M.D.
NPI 1407828445
Obstetrics & Gynecology in Wharton, NJ
About Dr. Guillermo Ortiz M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GUILLERMO ORTIZ M.D. (NPI 1407828445) is an individual obstetrics & gynecology provider in Wharton, New Jersey, licensed in New Jersey (25MA06046500) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through June 13, 2027, and is affiliated with Morristown Medical Center.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted 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. Guillermo Ortiz 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.
Medicare Billing Reassignments
4Medicare enrollment records show Guillermo Ortiz reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mine Hill, NJ 07803
- Reassigned Medicare billing, New Jersey enrollment
- 127 clinicians in this Medicare group
Denville, NJ 07834
- Reassigned Medicare billing, New Jersey enrollment
- 50 clinicians in this Medicare group
Florham Park, NJ 07932
- Reassigned Medicare billing, New Jersey enrollment
- 230 clinicians in this Medicare group
Greenville, SC 29607
- Reassigned Medicare billing, New Jersey enrollment
- 155 clinicians in this Medicare group
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 of Waiver 31D2167776
Guillermo Ortiz, MD · Wharton, NJAreas of Expertise CMS Part B claims 2
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Morristown Medical Center
Acute Care Hospitals · Morristown, NJSaint Clare's Hospital/ Denville Campus
Acute Care Hospitals · Denville, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 07885 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Guillermo Ortiz's NPI number?
The NPI number for Guillermo Ortiz is 1407828445. It was assigned to this individual provider in the NPPES registry on February 3, 2006.
Where is Guillermo Ortiz located?
Guillermo Ortiz practices at 249 South Main Street, Wharton, NJ 07885. The listed phone number is (973) 361-5252.
What is Guillermo Ortiz's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Guillermo Ortiz enrolled in Medicare?
Yes. Guillermo Ortiz 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 Guillermo Ortiz's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Guillermo Ortiz reassigns Medicare benefits to 4 organizations: Internal Medicine Of Morris County LLC (Mine Hill, NJ), Prime Healthcare Services - Saint Clare's LLC (Denville, NJ), Lifeline Medical Associates, LLC (Florham Park, NJ) and Ob Hospitalist Services New Jersey, PA (Greenville, 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 Guillermo Ortiz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Does Guillermo Ortiz hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 31D2167776) is associated with this NPI, valid through June 13, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
What insurance does Guillermo Ortiz accept?
Health plans from Oscar Health list Guillermo Ortiz 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 Guillermo Ortiz affiliated with any hospitals?
According to CMS data, Guillermo Ortiz is affiliated with Morristown Medical Center and Saint Clare's Hospital/ Denville Campus.
When was this NPI record last updated?
The NPPES record for Guillermo Ortiz was last updated on February 8, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Guillermo Ortiz, M.D. · NPI 1407828445
Obstetrics & Gynecology physician in Wharton, New Jersey. Individual provider, active in the CMS NPPES registry since February 3, 2006.
## Identity
- **NPI:** 1407828445 (Entity type: Individual)
- **Enumerated:** February 3, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 25MA06046500 (New Jersey)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 249 SOUTH MAIN STREET, Wharton, NJ 07885
- **Phone:** (973) 361-5252 · **Fax:** (973) 361-6161
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Internal Medicine Of Morris County LLC (NPI 1568570489, Mine Hill, NJ); Prime Healthcare Services - Saint Clare's LLC (NPI 1497134274, Denville, NJ); Lifeline Medical Associates, LLC (NPI 1821041617, Florham Park, NJ); Ob Hospitalist Services New Jersey, PA (NPI 1801169966, Greenville, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Central Del Caribe Escuela De Medicina, class of 1986
## Record status
- **NPPES last updated:** February 8, 2011
- **Other identifiers:** Medicare UPIN F78302 (NJ); Medicare UPIN 766325 (NJ)
- **CLIA laboratory certificates:** 1 on file
---
Source: [NPI Profile](https://npiprofile.com/npi/1407828445) · Data from the CMS NPPES public registry.