NPI registry status
Active
2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1366429110 M.D.
Verify on CMS → Harriet Hamer, M.D.
Pain Medicine (Anesthesiology) Physician in South Bend, Indiana.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,032 in Pain Medicine (Anesthesiology) 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
364
Medicare Part D claims · 59 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Harriet Hamer, M.D. filed 364 Medicare Part D claims in 2023 as a Pain Medicine (Anesthesiology) Physician in South Bend, Indiana, prescribing 94% generic.
- 364
- Part D claims, 2023
- 94%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥57th
- 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.
CMS NPPES provider registry desk
NPI 1366429110 · Pain Medicine (Anesthesiology) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1366429110
- ENUM-LEGACY 2005
- TAX-NARROW 4,032
- RX-LIGHT 364
- BOOK-THIN 83 in Indiana
- PHOTO-ENUM Mark Peckman · 2005
Harriet Hamer, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
364 ≥ 57th percentile 57% of 1,370,886 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 · 2023
✓
Board certification likely (heuristic, not verified)
Harriet Hamer, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Harriet Hamer, M.D.?
Quality data not reportedPrimary specialty
Pain Medicine (Anesthesiology) Physician
Medicare Part D claims
364 78% vs specialty avg
Specialty distribution in Indiana
How Pain Medicine (Anesthesiology) Physician compares to other specialties among Indiana 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 Pain Medicine (Anesthesiology) 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 | 1366429110 |
|---|---|
| Specialty | Pain Medicine (Anesthesiology) Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 12/22/2005 |
Hospital and facility affiliations
Facilities where Harriet Hamer, M.D. 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.
Southeast Anesthesiologists, Inc.
Indianapolis, IN
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 · Generic-heavy
Harriet Hamer, M.D. - brand share 6.0%
Pain Medicine (Anesthesiology) Physician average
6% brand-name claims vs 94% generic, on 364 2023 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 2023.
364
Total Claims
$24K
Total Drug Cost
59
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 461
- Total Day Supply
- 13,137
- Brand vs Generic
- 6% brand / 94% generic
- Brand Drug Cost
- $16K
- Generic Drug Cost
- $8K
- Opioid Claims
- 91 (25.0% rate)
Patient Demographics
- Average Patient Age
- 69.9 years
- Avg HCC Risk Score
- 1.60
- Gender Split
- 73% female / 27% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Harriet Hamer, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
80 claims
- Baclofen
Baclofen
40 claims
- Pregabalin 28
Pregabalin
28 claims
- Oxycodone Hcl 27
Oxycodone Hcl
27 claims
- Methocarbamol 21
Methocarbamol
21 claims
- Morphine Sulfate Er 20
Morphine Sulfate Er
20 claims
- Amitriptyline Hcl 19
Amitriptyline Hcl
19 claims
- Fentanyl 19
Fentanyl
19 claims
| Drug | Claims |
|---|---|
| Gabapentin | 80 |
| Baclofen | 40 |
| Pregabalin | 28 |
| Oxycodone Hcl | 27 |
| Methocarbamol | 21 |
| Morphine Sulfate Er Morphine Sulfate | 20 |
| Amitriptyline Hcl | 19 |
| Fentanyl | 19 |
| Tramadol Hcl | 12 |
| Meloxicam | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Pain Medicine (Anesthesiology) Physician in IN →
All providers in Indiana →
Compare specialties →
Pain Medicine (Anesthesiology) Physician Overview
How Harriet Hamer, M.D. fits within the Pain Medicine (Anesthesiology) Physician landscape nationally.
4,032
Pain Medicine (Anesthesiology) Physician Providers in US
53
States with Pain Medicine (Anesthesiology) Physician
1,657
Avg Claims per Provider
Harriet Hamer, M.D.'s 364 claims are below the specialty average of 1,657.
Nationwide Pain Medicine (Anesthesiology) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Hamer, both outside Indiana 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 Pain Medicine (Anesthesiology) Physician Providers in Indiana
Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as Hamer.
One of 83 Pain Medicine (Anesthesiology) Physician providers enrolled in Indiana, 5 are shown here.
Dr. Behzad Aalaei
M.D.
Highland, IN
Dr. Jamil Ahmed
M.D.
Michigan City, IN
Dr. Ali Akmal
M.D.
Franklin, IN
Dr. John Baccus
MD
Elkhart, IN
Dr. Debbie Bailey
MD
Muncie, IN
Compare Pain Medicine (Anesthesiology) Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Harriet Hamer, M.D.'s specialty? ▼
Harriet Hamer, M.D. specializes in Pain Medicine (Anesthesiology) Physician and practices in South Bend, Indiana. Credentials: M.D..
How much does Harriet Hamer, M.D. prescribe under Medicare Part D? ▼
In 2023, Harriet Hamer, M.D. wrote 364 Medicare Part D claims totaling $24K in drug costs for 59 beneficiaries.
Where is Harriet Hamer, M.D. located? ▼
Harriet Hamer, M.D. is located at 416 E MONROE ST, South Bend, IN, 46601. Phone: (574) 232-8119.
What is Harriet Hamer, M.D.'s NPI number? ▼
Harriet Hamer, M.D.'s National Provider Identifier (NPI) is 1366429110, issued on 12/22/2005.
Does Harriet Hamer, M.D. prescribe more brand-name or generic drugs? ▼
Harriet Hamer, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $16K in brand drug costs.
Does Harriet Hamer, M.D. prescribe opioids? ▼
Yes, Harriet Hamer, M.D. had 91 opioid claims in 2023 with an opioid prescribing rate of 25.0%.
How many Pain Medicine (Anesthesiology) Physician providers are there in the US? ▼
There are 4,032 Pain Medicine (Anesthesiology) Physician providers across 53 states in the US. The average Pain Medicine (Anesthesiology) Physician provider writes 1,657 Medicare Part D claims per year.
What drugs does Harriet Hamer, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Harriet Hamer, M.D.'s most frequently prescribed drugs include Gabapentin, Baclofen, Pregabalin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Harriet Hamer, M.D. accept Medicare? ▼
Harriet Hamer, M.D. appears in CMS Medicare data with 364 Part D claims and 59 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Harriet Hamer, M.D.'s credentials? ▼
Harriet Hamer, M.D.'s NPI is 1366429110 with credentials M.D.. 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 (2023). 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 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.