DR. ROSA LORENIA DIAZ (M.D.) – Obstetrics & Gynecology Physician, NPI 1336477009

DR. ROSA LORENIA DIAZ (M.D.) is a healthcare provider. based in Lynn, Massachusetts. specializing in OBSTETRICS/GYNECOLOGY. They hold the professional credentials M.D.. They hold a License No. A110461 (CA). The NPI Number for DR. ROSA LORENIA DIAZ (M.D.) is 1336477009

Main info

Female
Sole Proprietor
18 Years Of Experience
Accepts Medicare Assignment
Name
DR. ROSA LORENIA DIAZ (M.D.)
NPI
1336477009
Phone
(781) 581-3900
Address
PO BOX 526
Enumeration Date
18 November 2009
Last Update Date
25 January 2013

Doctor Profile

Medical School Name
STANFORD UNIVERSITY SCHOOL OF MEDICINE
Secondary Phone
9787396950
Graduation Year
2008 (18 years ago)
PAC ID
5597919076
Group Practice PAC ID
3577467224
Professional Enrollment ID
I20130211000038
Address ID
MA019233748DA1XXXXDRXX300
Data current as of
20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience55
Completeness75
Years active:16State licenses:2Digital endpointsOther names

1,231 OBSTETRICS/GYNECOLOGY in MA

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Provider Addresses for DR. ROSA LORENIA DIAZ (M.D.)

  • PO Box, adj, Main Road, Lot's Bridge, Upwell, King's Lynn and West Norfolk, Norfolk, East of England, England, PE14 9JA, United Kingdom

    LYNN, MA 019030626

    Phone: (781) 581-3900

    Type: Mailing

  • 269, Union Street, Lynn, Essex County, Massachusetts, 01901, United States

    LYNN COMMUNITY HEALTH INC.

    LYNN, MA 019011314

    Phone: (781) 581-3900

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2013-02-11

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20130211000038IObstetrics/GynecologyMATBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCSDescriptionServicesBeneficiariesMedicare allowed
99214Established patient office or other outpatient visit, 30-39 minutes4330$0
G0101Cervical or vaginal cancer screening; pelvic and clinical breast examination1515$0
99213Established patient office or other outpatient visit, 20-29 minutes1212$0
View full utilization report →

Insurance plans in this area (ZIP 01903)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 3577467224View full group profile

Reviews

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Frequently asked questions

How do I look up DR. ROSA LORENIA DIAZ (M.D.) by NPI?
Use NPI 1336477009 when you need to reference DR. ROSA LORENIA DIAZ (M.D.) in forms, claims, or directories.
Is DR. ROSA LORENIA DIAZ (M.D.)'s NPI currently valid?
The extract we use shows DR. ROSA LORENIA DIAZ (M.D.) as active.
What does DR. ROSA LORENIA DIAZ (M.D.) treat or focus on?
Patients typically see DR. ROSA LORENIA DIAZ (M.D.) under the specialty Obstetrics & Gynecology Physician. Clinical services aligned with this taxonomy classification.
What location metadata exists for DR. ROSA LORENIA DIAZ (M.D.)?
The page summarizes Lynn, Massachusetts for DR. ROSA LORENIA DIAZ (M.D.); expand the address list for detail.
Is DR. ROSA LORENIA DIAZ (M.D.) a real provider?
This page reflects official NPPES data for NPI 1336477009. Always confirm identity and privileges with the practice and licensing boards.

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