NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1477622280 MD
Verify on CMS → Susan Schaefer, MD
Allergy & Immunology Physician in Manchester, New Hampshire.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,412 in Allergy & Immunology 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.
Prescribing volume
788
Medicare Part D claims · 199 beneficiaries · Allergy & Immunology Physician avg: 788
Generic prescribing
65%
generic claims · 35% 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
Susan Schaefer, MD filed 788 Medicare Part D claims in 2024 as an Allergy & Immunology Physician in Manchester, New Hampshire, prescribing 65% generic.
- 788
- Part D claims, 2024
- 65%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥70th
- 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 Susan Schaefer, MD
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 1477622280), first enumerated 11/07/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 788 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations 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 1477622280 · Allergy & Immunology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1477622280
- ENUM-LEGACY 2006
- TAX-NARROW 3,412
- RX-LIGHT 788
- BOOK-THIN 14 in New Hampshire
- PHOTO-ENUM Anne Lent · 2006
Susan Schaefer, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
788 ≥ 70th percentile 70% 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
✓
Board certification likely (heuristic, not verified)
Susan Schaefer, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Susan Schaefer, MD?
Quality data not reportedPrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
788 0% vs specialty avg
Specialty distribution in New Hampshire
How Allergy & Immunology Physician compares to other specialties among New Hampshire 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 Allergy & Immunology 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 | 1477622280 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | MD |
| Gender | Female |
| NPI Issued | 11/07/2006 |
Hospital and facility affiliations
Facilities where Susan Schaefer, MD 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.
Allergy Affiliates OF Danvers
Danvers, MA
Asthma And Allergy Affiliates Inc
Salem, MA
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 · Above average
Susan Schaefer, MD - brand share 35.0%
Allergy & Immunology Physician average
35% brand-name claims vs 65% generic, on 788 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.
788
Total Claims
$185K
Total Drug Cost
199
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,295.567
- Total Day Supply
- 36,617
- Brand vs Generic
- 35% brand / 65% generic
- Brand Drug Cost
- $167K
- Generic Drug Cost
- $18K
Patient Demographics
- Average Patient Age
- 70.2 years
- Avg HCC Risk Score
- 1.14
- Gender Split
- 72% female / 28% male
- Age Distribution
- <65: 36, 65-74: 89, 75-84: 59, 85+: 15
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Susan Schaefer, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Fluticasone Propio…
Fluticasone Propionate
104 claims
- Azelastine Hcl
Azelastine Hcl
90 claims
- Montelukast Sodium
Montelukast Sodium
80 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
43 claims
- Ipratropium Bromide 39
Ipratropium Bromide
39 claims
- Breo Ellipta 35
Breo Ellipta
35 claims
- Omeprazole 34
Omeprazole
34 claims
- Famotidine 29
Famotidine
29 claims
| Drug | Claims |
|---|---|
| Fluticasone Propionate | 104 |
| Azelastine Hcl | 90 |
| Montelukast Sodium | 80 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 43 |
| Ipratropium Bromide | 39 |
| Breo Ellipta Fluticasone/Vilanterol | 35 |
| Omeprazole | 34 |
| Famotidine | 29 |
| Wixela Inhub Fluticasone Propion/Salmeterol | 27 |
| Advair Hfa Fluticasone Propion/Salmeterol | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy & Immunology Physician Overview
How Susan Schaefer, MD fits within the Allergy & Immunology Physician landscape nationally.
3,412
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
788
Avg Claims per Provider
Susan Schaefer, MD's 788 claims are below the specialty average of 788.
Nationwide Allergy & Immunology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Schaefer, both outside New Hampshire so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Allergy & Immunology Physician Providers in New Hampshire
Other clinicians with the same primary specialty enrolled in New Hampshire, drawn from the same CMS NPPES roster as Schaefer.
One of 14 Allergy & Immunology Physician providers enrolled in New Hampshire, 5 are shown here.
Dr. Joan Cassettari
D.O.
Concord, NH
Dr. David Goodman
MD
Lebanon, NH
Dr. Amitha Harish
MD
Nashua, NH
Dr. Karen Hsu Blatman
MD
Lebanon, NH
Dr. Anne Miranowski
M.D.
Lebanon, NH
Compare Allergy & Immunology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Susan Schaefer, MD's specialty? ▼
Susan Schaefer, MD specializes in Allergy & Immunology Physician and practices in Manchester, New Hampshire. Credentials: MD.
How much does Susan Schaefer, MD prescribe under Medicare Part D? ▼
In 2024, Susan Schaefer, MD wrote 788 Medicare Part D claims totaling $185K in drug costs for 199 beneficiaries.
Where is Susan Schaefer, MD located? ▼
Susan Schaefer, MD is located at 100 HITCHCOCK WAY, Manchester, NH, 03104. Phone: (603) 695-2500.
What is Susan Schaefer, MD's NPI number? ▼
Susan Schaefer, MD's National Provider Identifier (NPI) is 1477622280, issued on 11/07/2006.
Does Susan Schaefer, MD prescribe more brand-name or generic drugs? ▼
Susan Schaefer, MD's prescribing is 35% brand-name and 65% generic drugs by claim count, with $167K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,412 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 788 Medicare Part D claims per year.
What drugs does Susan Schaefer, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Susan Schaefer, MD's most frequently prescribed drugs include Fluticasone Propionate, Azelastine Hcl, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Susan Schaefer, MD accept Medicare? ▼
Susan Schaefer, MD appears in CMS Medicare data with 788 Part D claims and 199 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Susan Schaefer, MD's credentials? ▼
Susan Schaefer, MD's NPI is 1477622280 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.
- 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.