NIRMALA LOIS MONTEIRO (MD) – Internal Medicine Physician, NPI 1558346338

NIRMALA LOIS MONTEIRO (MD) is a healthcare provider. based in Fairfield, Connecticut. specializing in Internal Medicine Physician. They hold the professional credentials MD. They hold a License No. 026844 (CT). The NPI Number for NIRMALA LOIS MONTEIRO (MD) is 1558346338

Main info

Female
Sole Proprietor
44 Years Of Experience
Accepts Medicare Assignment
Name
NIRMALA LOIS MONTEIRO (MD)
NPI
1558346338
Phone
(203) 292-6500
Address
52 BEACH ROAD
Enumeration Date
14 December 2005
Last Update Date
18 July 2008

Doctor Profile

Medical School Name
OTHER
Secondary Phone
2033843388
Graduation Year
1982 (44 years ago)
PAC ID
5496818411
Group Practice PAC ID
1254233836
Professional Enrollment ID
I20090116000157
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience54
Completeness75
Years active:20State licenses:1Digital endpointsOther names

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Provider Addresses for NIRMALA LOIS MONTEIRO (MD)

  • Fairfield Medical Center, 52, Beach Road, Fairfield, Fairfield County, Connecticut, 06834, United States

    SUITE 107

    FAIRFIELD, CT 06824

    Phone: (203) 292-6500

    Fax: (203) 292-6500

    Mailing address matches the actual address.

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: 2009-01-16

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
I20090116000157IInternal MedicineCTTBD

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 minutes11273$0
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit7777$0
99213Established patient office or other outpatient visit, 20-29 minutes2622$0
93000Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report1919$0
G0438Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit1111$0
View full utilization report →

Insurance plans in this area (ZIP 06824)

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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: 1254233836View full group profile
NameSpecialtyState
Interventional Cardiology, Cardiovascular Disease (Cardiology)CT
-CT
-CT
Internal MedicineNJ
Hospitalist, Internal MedicineCT
-CT
-CT
Internal MedicineCT
Nurse PractitionerCT
Physician AssistantCT

Reviews

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Frequently asked questions

What number should I use to identify NIRMALA LOIS MONTEIRO (MD) for billing?
Administrative and clinical systems typically use NPI 1558346338 for NIRMALA LOIS MONTEIRO (MD).
Quick check: is NIRMALA LOIS MONTEIRO (MD) active?
Public NPPES data shows NIRMALA LOIS MONTEIRO (MD) with an active NPI status right now.
What services align with NIRMALA LOIS MONTEIRO (MD)'s listing?
NIRMALA LOIS MONTEIRO (MD)'s public classification highlights Internal Medicine Physician. Clinical services aligned with this taxonomy classification.
Is NIRMALA LOIS MONTEIRO (MD) tied to Fairfield, Connecticut?
If you are local to Fairfield, Connecticut, NIRMALA LOIS MONTEIRO (MD) may be relevant to your search.
What is the difference between NPI and a medical license?
An NPI is a federal identifier; a medical license is issued by a state and governs where someone may practice.

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