NPI registry status
Active
2026 NPPES data Neonatal Intensive Care Registered Nurse NPI 1518121490 APRN
Verify on CMS → Gretchen Hamn, APRN
Neonatal Intensive Care Registered Nurse in South Weymouth, Massachusetts.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,097 in Neonatal Intensive Care Registered Nurse, 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
Gretchen Hamn, APRN is a Neonatal Intensive Care Registered Nurse in South Weymouth, Massachusetts, listed in the federal CMS National Provider Identifier registry.
- #294
- Neonatal Intensive Care Registered Nurse rank among Massachusetts 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 Gretchen Hamn, APRN
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 1518121490), first enumerated 07/10/2008.
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
- State context
State board disciplinary context
Massachusetts statewide board action statistics are published annually — these figures describe aggregate state activity, not Gretchen Hamn, APRN's individual license status. Verify directly with the state medical board.
Source: BORIM annual report 2023
- 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 1518121490 · Neonatal Intensive Care Registered Nurse
NPI-10 · ENUM-MID · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1518121490
- ENUM-MID 2008
- TAX-NARROW 1,097
- RX-NONE No Part D
- BOOK-THIN 17 in Massachusetts
- PHOTO-ENUM Lucy Smyth, MSN/NNP · 2008
What does the federal data show about Gretchen Hamn, APRN?
Quality data not reportedPrimary specialty
Neonatal Intensive Care Registered Nurse
Specialty distribution in Massachusetts
How Neonatal Intensive Care Registered Nurse compares to other specialties among Massachusetts 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 Neonatal Intensive Care Registered Nurse. 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 | 1518121490 |
|---|---|
| Specialty | Neonatal Intensive Care Registered Nurse |
| Credentials | APRN |
| Gender | Female |
| NPI Issued | 07/10/2008 |
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Gretchen Hamn, APRN. To verify Gretchen Hamn, APRN's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
More Neonatal Intensive Care Registered Nurse in MA →
All providers in Massachusetts →
Compare specialties →
Neonatal Intensive Care Registered Nurse Overview
How Gretchen Hamn, APRN fits within the Neonatal Intensive Care Registered Nurse landscape nationally.
1,097
Neonatal Intensive Care Registered Nurse Providers in US
49
States with Neonatal Intensive Care Registered Nurse
641
Avg Claims per Provider
Nationwide Neonatal Intensive Care Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Hamn, both outside Massachusetts so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2008)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neonatal Intensive Care Registered Nurse Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Hamn.
One of 17 Neonatal Intensive Care Registered Nurse providers enrolled in Massachusetts, 5 are shown here.
Nicole Cabral
RN
Stoneham, MA
Holbrook Caron
Ashland, MA
Ashley Denham
RN
Marlborough, MA
Chelsea Forde
REGISTERED NURSE
Boston, MA
Maureen Kunz
NNP-BC
Boston, MA
Compare Neonatal Intensive Care Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is Gretchen Hamn, APRN's specialty? ▼
Gretchen Hamn, APRN specializes in Neonatal Intensive Care Registered Nurse and practices in South Weymouth, Massachusetts. Credentials: APRN.
Where is Gretchen Hamn, APRN located? ▼
Gretchen Hamn, APRN is located at 55 FOGG RD, South Weymouth, MA, 02190. Phone: (781) 340-8489.
What is Gretchen Hamn, APRN's NPI number? ▼
Gretchen Hamn, APRN's National Provider Identifier (NPI) is 1518121490, issued on 07/10/2008.
How many Neonatal Intensive Care Registered Nurse providers are there in the US? ▼
There are 1,097 Neonatal Intensive Care Registered Nurse providers across 49 states in the US. The average Neonatal Intensive Care Registered Nurse provider writes 641 Medicare Part D claims per year.
Does Gretchen Hamn, APRN accept Medicare? ▼
Gretchen Hamn, APRN appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gretchen Hamn, APRN's credentials? ▼
Gretchen Hamn, APRN's NPI is 1518121490 with credentials APRN. 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 August 2026 (NPPES) / 2024 (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 August 2026.