Mrs Melissa A Gregg, NP - Medicare Nurse Practitioner in Costa Mesa, CA

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Mrs Melissa A Gregg, NP is a medicare enrolled "Nurse Practitioner - Family" in Costa Mesa, California. Her current practice location is 1150 Baker St, Costa Mesa, California. You can reach out to her office (for appointments etc.) via phone at (866) 389-2727.

Mrs Melissa A Gregg is licensed to practice in California (license number 95019125) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1255054490.

Contact Information

Mrs Melissa A Gregg, NP
1150 Baker St,
Costa Mesa, CA 92626-4111
(866) 389-2727
Not Available

Map and Direction




Provider's Profile

Full NameMrs Melissa A Gregg
GenderFemale
SpecialityNurse Practitioner - Family
Location1150 Baker St, Costa Mesa, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1255054490
  • Provider Enumeration Date: 09/22/2022
  • Last Update Date: 09/22/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 2961870050
  • Enrollment ID: I20221121002805

Medical Identifiers

Medical identifiers for Mrs Melissa A Gregg such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1255054490NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
363LF0000XNurse Practitioner - Family 95019125 (California)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mrs Melissa A Gregg allows following entities to bill medicare on her behalf.
Entity NameMinuteclinic Diagnostic Medical Group Of California Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033309372
PECOS PAC ID: 8224191374
Enrollment ID: O20090115000289
Entity NameMinuteclinic Diagnostic Medical Group Of Orange County Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1104013879
PECOS PAC ID: 5991868929
Enrollment ID: O20090116000214
Entity NameMinuteclinic Diagnostic Medical Group Of San Diego Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568659233
PECOS PAC ID: 2567520414
Enrollment ID: O20090127000249
Entity NameThe Roads Foundation Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1508278359
PECOS PAC ID: 2961722558
Enrollment ID: O20150521002128

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mrs Melissa A Gregg is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mrs Melissa A Gregg, NP
2847 Alta Laguna Blvd,
Laguna Beach, CA 92651-2083

Ph: (408) 205-8739		Mrs Melissa A Gregg, NP
1150 Baker St,
Costa Mesa, CA 92626-4111

Ph: (866) 389-2727

Reviews and Comments


Nurse Practitioner Nurses in Costa Mesa, CA

Alexandra Hutchison, FNP-C
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 1530 Baker St Ste A, Costa Mesa, CA 92626
Phone: 714-559-5436    
Judith Rivera, NP
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Medicare: Not Enrolled in Medicare
Practice Location: 600 Anton Blvd Fl 11, Costa Mesa, CA 92626
Phone: 623-374-7774    Fax: 855-420-6361
Madison Lucas,
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Medicare: Medicare Enrolled
Practice Location: 150 Paularino Ave Ste D182, Costa Mesa, CA 92626
Phone: 866-300-7227    
Yvette Alfelor Elpidio, NP
Nurse Practitioner
Medicare: Accepting Medicare Assignments
Practice Location: 3151 Airway Ave, T-3, Costa Mesa, CA 92626
Phone: 714-545-5550    Fax: 714-545-5748
Mrs. Suzanne Clara Larkin, FNP-C
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 1665 Scenic Ave, Costa Mesa, CA 92626
Phone: 714-436-4444    
Rachel Renee Cliser, NP
Nurse Practitioner
Medicare: Medicare Enrolled
Practice Location: 188 E 17th St Ste 101, Costa Mesa, CA 92627
Phone: 949-515-4548    
Courtney Proctor,
Nurse Practitioner
Medicare: Not Enrolled in Medicare
Practice Location: 601 W 19th St, Costa Mesa, CA 92627
Phone: 714-922-4100    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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