NPI registry status
Active
2026 NPPES data Rheumatology Physician NPI 1184600371 MD
Verify on CMS → Anne Liebling, MD
Rheumatology Physician in Danbury, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,200 in Rheumatology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Anne Liebling, MD is a Rheumatology Physician in Danbury, Connecticut, listed in the federal CMS National Provider Identifier registry.
- #84
- Rheumatology Physician rank among Connecticut specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Anne Liebling, MD
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1184600371), first enumerated 12/20/2005.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1184600371 · Rheumatology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1184600371
- ENUM-LEGACY 2005
- TAX-MID 6K Rheumatology Physician
- RX-NONE No Part D
- BOOK-THIN 124 in Connecticut
- PHOTO-ENUM James Brodeur · 2005
◑
Board-eligible specialty (heuristic, not verified)
Anne Liebling, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Anne Liebling, MD?
Quality data not reportedPrimary specialty
Rheumatology Physician
Specialty distribution in Connecticut
How Rheumatology Physician compares to other specialties among Connecticut providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Rheumatology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1184600371 |
|---|---|
| Specialty | Rheumatology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 12/20/2005 |
Rheumatology Physician Overview
How Anne Liebling, MD fits within the Rheumatology Physician landscape nationally.
6,200
Rheumatology Physician Providers in US
52
States with Rheumatology Physician
2,054
Avg Claims per Provider
Nationwide Rheumatology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Liebling, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Rheumatology Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Liebling.
One of 124 Rheumatology Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Crispin Abarientos
M.D.
Middletown, CT
Dr. Aryeh Abeles
M.D.
Meriden, CT
Dr. Micha Abeles
M.D.
Meriden, CT
Dr. Jackilyn Annelli
PA
Norwich, CT
Dr. Sandra Apenteng
MD
Glastonbury, CT
Compare Rheumatology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Anne Liebling, MD's specialty? ▼
Anne Liebling, MD specializes in Rheumatology Physician and practices in Danbury, Connecticut. Credentials: MD.
Where is Anne Liebling, MD located? ▼
Anne Liebling, MD is located at 33 GERMANTOWN ROAD, Danbury, CT, 06810. Phone: (203) 794-5600.
What is Anne Liebling, MD's NPI number? ▼
Anne Liebling, MD's National Provider Identifier (NPI) is 1184600371, issued on 12/20/2005.
How many Rheumatology Physician providers are there in the US? ▼
There are 6,200 Rheumatology Physician providers across 52 states in the US. The average Rheumatology Physician provider writes 2,054 Medicare Part D claims per year.
Does Anne Liebling, MD accept Medicare? ▼
Anne Liebling, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Anne Liebling, MD's credentials? ▼
Anne Liebling, MD's NPI is 1184600371 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.