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MARGARET GREENOUGH, MD, PC
NPI 1144064106
Family Medicine in San Luis Obispo, CA

Active since June 24, 2024CLIA 05D2321400 · Waiver
4251 S HIGUERA ST STE 701, SAN LUIS OBISPO, CA 93401(805) 505-9899(805) 439-0138 Get Directions Write a Review

NPPES record last updated: October 21, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 18, 2024, Sep 6, 2024, Jun 24, 2024 (3 updates tracked since 2024).

About Margaret Greenough, Md, Pc NPPES

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

MARGARET GREENOUGH, MD, PC (NPI 1144064106) is a healthcare organization registered as a family medicine in San Luis Obispo, California and active in the NPI registry since June 2024. The organization holds a CLIA Waiver certificate valid through April 2, 2027 and lists Margaret Bliss Greenough, President, as its authorized official.

NPPES Registry Identity

NPI1144064106
Entity TypeOrganization
Primary Taxonomy207Q00000X
Legal Business NameEN TIRAGE MEDSPA
Location Address4251 S HIGUERA ST STE 701San Luis Obispo, CA 93401-7742
Mailing Address4251 S Higuera St Ste 701San Luis Obispo, CA 93401-7742 · (805) 505-9899 · Fax (805) 439-0138
Phone(805) 505-9899
Fax(805) 439-0138
Organization SubpartNo
Authorized OfficialMargaret Bliss GreenoughPresident · (805) 550-5831
Enumeration DateJune 24, 2024
Last NPPES UpdateOctober 21, 20243 updates tracked since enumeration
NPPES CertifiedOctober 21, 2024
✔ NPI 1144064106 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
4251 S HIGUERA ST STE 701, San Luis Obispo, CA 93401
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Other Names 1

Doing Business AsMargaret Greenough, Md, Pc

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret Greenough, Md, Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Margaret Greenough, MD, PC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Margaret Greenough, MD
Family Practice
NPI 1245542224
4251 S HIGUERA ST STE 701
San Luis Obispo, CA 93401
(805) 505-9899
✔ PECOS✔ Accepts MedicareSame address
Julia Veen, DO
Family Practice
NPI 1639798952
4251 S HIGUERA ST STE 102
San Luis Obispo, CA 93401
(805) 505-9899
✔ PECOS✔ Accepts MedicareSame address

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 05D2321400

En Tirage Medspa Dba Margaret Greenough MD PC · San Luis Obispo, CA
Active · expires Apr 2, 2027
CLIA Number05D2321400
Laboratory TypePhysician Office
Certificate Effective DateApril 3, 2025
Certificate Expiration DateApril 2, 2027
Laboratory DirectorMargaret B. Greenough
Laboratory Phone(805) 505-9899
Laboratory LocationEn Tirage Medspa Dba Margaret Greenough MD PC4251 S Higuera St Ste 102, San Luis Obispo, CA 93401
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

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 En Tirage Medspa's NPI number?

The NPI number for En Tirage Medspa is 1144064106. It was assigned to this organization in the NPPES registry on June 24, 2024. The provider is doing business as Margaret Greenough, MD, PC.

Where is En Tirage Medspa located?

En Tirage Medspa is located at 4251 S Higuera St Ste 701, San Luis Obispo, CA 93401. The listed phone number is (805) 505-9899.

What is En Tirage Medspa's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is En Tirage Medspa enrolled in Medicare?

Yes. En Tirage Medspa is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through En Tirage Medspa?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Family Practice, reassign their Medicare billing to En Tirage Medspa. A 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 the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does En Tirage Medspa hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2321400) is associated with this NPI, valid through April 2, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for En Tirage Medspa was last updated on October 21, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months 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.