NPI registry status
Active
2026 NPPES data Inpatient Obstetric Registered Nurse NPI 1952877938 FNP
Verify on CMS → Heather Hammaker, FNP
Inpatient Obstetric Registered Nurse in Mount Airy, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 642 in Inpatient Obstetric 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.
Prescribing volume
7K
Medicare Part D claims · 698 beneficiaries · Inpatient Obstetric Registered Nurse avg: 708
Generic prescribing
85%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Heather Hammaker, FNP filed 7,058 Medicare Part D claims in 2024 as an Inpatient Obstetric Registered Nurse in Mount Airy, North Carolina, prescribing 85% generic.
- 7K
- Part D claims, 2024
- 85%
- generic prescribing
- ≥96th
- pct by Part D claim volume (lower-bound band)
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 Heather Hammaker, FNP
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1952877938), first enumerated 10/17/2018.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 7,058 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1952877938 · Inpatient Obstetric Registered Nurse
NPI-10 · ENUM-RECENT · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1952877938
- ENUM-RECENT 2018
- TAX-NARROW 642
- RX-MID 7,058
- BOOK-THIN 26 in North Carolina
- PHOTO-ENUM Kristin Wall, WHNP · 2018
Heather Hammaker, FNP's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
7,058 ≥ 96th percentile 96% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Heather Hammaker, FNP?
Quality data not reportedPrimary specialty
Inpatient Obstetric Registered Nurse
Medicare Part D claims
7,058 10× vs specialty avg
Specialty distribution in North Carolina
How Inpatient Obstetric Registered Nurse compares to other specialties among North Carolina 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 Inpatient Obstetric 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 | 1952877938 |
|---|---|
| Specialty | Inpatient Obstetric Registered Nurse |
| Credentials | FNP |
| Gender | Female |
| NPI Issued | 10/17/2018 |
Hospital and facility affiliations
Facilities where Heather Hammaker, FNP bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Forsyth Memorial Hospital Inc
Winston Salem, NC
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Heather Hammaker, FNP - brand share 14.0%
Inpatient Obstetric Registered Nurse average
14% brand-name claims vs 85% generic, on 7,058 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
7,058
Total Claims
$657K
Total Drug Cost
698
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 13,086.833
- Total Day Supply
- 376,302
- Brand vs Generic
- 14% brand / 85% generic
- Brand Drug Cost
- $557K
- Generic Drug Cost
- $94K
- Opioid Claims
- 223 (3.2% rate)
- Antibiotic Claims
- 157
Patient Demographics
- Average Patient Age
- 70.9 years
- Avg HCC Risk Score
- 1.53
- Gender Split
- 63% female / 37% male
- Age Distribution
- <65: 129, 65-74: 311, 75-84: 203, 85+: 55
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Heather Hammaker, FNP prescribes most
Top Medicare Part D drugs by claim count, 2024
- Gabapentin
Gabapentin
220 claims
- Levothyroxine Sodium
Levothyroxine Sodium
209 claims
- Atorvastatin Calcium
Atorvastatin Calcium
206 claims
- Omeprazole
Omeprazole
180 claims
- Pantoprazole Sodium
Pantoprazole Sodium
175 claims
- Alprazolam
Alprazolam
165 claims
- Lisinopril
Lisinopril
140 claims
- Amlodipine Besylate
Amlodipine Besylate
136 claims
| Drug | Claims |
|---|---|
| Gabapentin | 220 |
| Levothyroxine Sodium | 209 |
| Atorvastatin Calcium | 206 |
| Omeprazole | 180 |
| Pantoprazole Sodium | 175 |
| Alprazolam | 165 |
| Lisinopril | 140 |
| Amlodipine Besylate | 136 |
| Sertraline Hcl | 132 |
| Rosuvastatin Calcium | 127 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Inpatient Obstetric Registered Nurse in NC →
All providers in North Carolina →
Compare specialties →
Inpatient Obstetric Registered Nurse Overview
How Heather Hammaker, FNP fits within the Inpatient Obstetric Registered Nurse landscape nationally.
642
Inpatient Obstetric Registered Nurse Providers in US
52
States with Inpatient Obstetric Registered Nurse
708
Avg Claims per Provider
Heather Hammaker, FNP's 7,058 claims are above the specialty average of 708.
Nationwide Inpatient Obstetric Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Hammaker, both outside North Carolina so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Inpatient Obstetric Registered Nurse Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Hammaker.
One of 26 Inpatient Obstetric Registered Nurse providers enrolled in North Carolina, 5 are shown here.
Joan Bose
RNFA
Charlotte, NC
Melani Bryant
RN
Durham, NC
Marissa Cochran
Raleigh, NC
Stacie Diette
CNM
Durham, NC
Kelly Ellington
WHNP-BC
Clayton, NC
Compare Inpatient Obstetric Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is Heather Hammaker, FNP's specialty? ▼
Heather Hammaker, FNP specializes in Inpatient Obstetric Registered Nurse and practices in Mount Airy, North Carolina. Credentials: FNP.
How much does Heather Hammaker, FNP prescribe under Medicare Part D? ▼
In 2024, Heather Hammaker, FNP wrote 7,058 Medicare Part D claims totaling $657K in drug costs for 698 beneficiaries.
Where is Heather Hammaker, FNP located? ▼
Heather Hammaker, FNP is located at 865 W LAKE DR, Mount Airy, NC, 27030. Phone: (336) 719-6100.
What is Heather Hammaker, FNP's NPI number? ▼
Heather Hammaker, FNP's National Provider Identifier (NPI) is 1952877938, issued on 10/17/2018.
Does Heather Hammaker, FNP prescribe more brand-name or generic drugs? ▼
Heather Hammaker, FNP's prescribing is 14% brand-name and 85% generic drugs by claim count, with $557K in brand drug costs.
Does Heather Hammaker, FNP prescribe opioids? ▼
Yes, Heather Hammaker, FNP had 223 opioid claims in 2024 with an opioid prescribing rate of 3.2%.
How many Inpatient Obstetric Registered Nurse providers are there in the US? ▼
There are 642 Inpatient Obstetric Registered Nurse providers across 52 states in the US. The average Inpatient Obstetric Registered Nurse provider writes 708 Medicare Part D claims per year.
What drugs does Heather Hammaker, FNP prescribe most often? ▼
Based on 2024 Medicare Part D data, Heather Hammaker, FNP's most frequently prescribed drugs include Gabapentin, Levothyroxine Sodium, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Heather Hammaker, FNP accept Medicare? ▼
Heather Hammaker, FNP appears in CMS Medicare data with 7,058 Part D claims and 698 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Heather Hammaker, FNP's credentials? ▼
Heather Hammaker, FNP's NPI is 1952877938 with credentials FNP. 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.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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.