NPI registry status
Active
2026 NPPES data Undersea and Hyperbaric Medicine (Preventive Medicine) Physician NPI 1568417574 MD
Verify on CMS → Eric Spencer, MD
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in Springfield, Oregon.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 247 in Undersea and Hyperbaric Medicine (Preventive Medicine) 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
336
Medicare Part D claims · 233 beneficiaries · Undersea and Hyperbaric Medicine (Preventive Medicine) Physician avg: 690
Generic prescribing
91%
generic claims · 9% 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
Eric Spencer, MD filed 336 Medicare Part D claims in 2024 as an Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in Springfield, Oregon, prescribing 91% generic.
- 336
- Part D claims, 2024
- 91%
- generic prescribing
- ≥56th
- 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 Eric Spencer, 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 1568417574), first enumerated 05/24/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 336 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
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 1568417574 · Undersea and Hyperbaric Medicine (Preventive Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1568417574
- ENUM-LEGACY 2006
- TAX-TRACE 247
- RX-LIGHT 336
- BOOK-THIN 5 in Oregon
- PHOTO-ENUM Ward Reed, MD MPH · 2006
Eric Spencer, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
336 ≥ 56th percentile 56% 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-eligible specialty (heuristic, not verified)
Eric Spencer, 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 Eric Spencer, MD?
Quality data not reportedPrimary specialty
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician
Medicare Part D claims
336 51% vs specialty avg
Specialty distribution in Oregon
How Undersea and Hyperbaric Medicine (Preventive Medicine) Physician compares to other specialties among Oregon 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 Undersea and Hyperbaric Medicine (Preventive Medicine) 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 | 1568417574 |
|---|---|
| Specialty | Undersea and Hyperbaric Medicine (Preventive Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/24/2006 |
Brand vs generic prescribing mix · Generic-heavy
Eric Spencer, MD - brand share 9.0%
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician average
9% brand-name claims vs 91% generic, on 336 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.
336
Total Claims
$17K
Total Drug Cost
233
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 336.167
- Total Day Supply
- 3,500
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $13K
- Generic Drug Cost
- $3K
- Opioid Claims
- 66 (19.6% rate)
- Antibiotic Claims
- 112
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 1.67
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 41, 65-74: 77, 75-84: 79, 85+: 36
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Eric Spencer, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
44 claims
- Cefpodoxime Proxetil
Cefpodoxime Proxetil
27 claims
- Prednisone
Prednisone
26 claims
- Eliquis
Eliquis
18 claims
- Sulfamethoxazole-T… 16
Sulfamethoxazole-Trimethoprim
16 claims
- Cephalexin 14
Cephalexin
14 claims
- Doxycycline Monohy… 12
Doxycycline Monohydrate
12 claims
- Amoxicillin-Clavul… 11
Amoxicillin-Clavulanate Potass
11 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 44 |
| Cefpodoxime Proxetil | 27 |
| Prednisone | 26 |
| Eliquis Apixaban | 18 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 16 |
| Cephalexin | 14 |
| Doxycycline Monohydrate | 12 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 11 |
| Ondansetron Odt Ondansetron | 11 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Undersea and Hyperbaric Medicine (Preventive Medicine) Physician in OR →
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Compare specialties →
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Overview
How Eric Spencer, MD fits within the Undersea and Hyperbaric Medicine (Preventive Medicine) Physician landscape nationally.
247
Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Providers in US
41
States with Undersea and Hyperbaric Medicine (Preventive Medicine) Physician
690
Avg Claims per Provider
Eric Spencer, MD's 336 claims are below the specialty average of 690.
Nationwide Undersea and Hyperbaric Medicine (Preventive Medicine) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Spencer, both outside Oregon 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 Undersea and Hyperbaric Medicine (Preventive Medicine) Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Spencer.
One of 5 Undersea and Hyperbaric Medicine (Preventive Medicine) Physician providers enrolled in Oregon, 4 are shown here.
Frequently Asked Questions
What is Eric Spencer, MD's specialty? ▼
Eric Spencer, MD specializes in Undersea and Hyperbaric Medicine (Preventive Medicine) Physician and practices in Springfield, Oregon. Credentials: MD.
How much does Eric Spencer, MD prescribe under Medicare Part D? ▼
In 2024, Eric Spencer, MD wrote 336 Medicare Part D claims totaling $17K in drug costs for 233 beneficiaries.
Where is Eric Spencer, MD located? ▼
Eric Spencer, MD is located at 1460 G ST, Springfield, OR, 97477. Phone: (541) 726-4400.
What is Eric Spencer, MD's NPI number? ▼
Eric Spencer, MD's National Provider Identifier (NPI) is 1568417574, issued on 05/24/2006.
Does Eric Spencer, MD prescribe more brand-name or generic drugs? ▼
Eric Spencer, MD's prescribing is 9% brand-name and 91% generic drugs by claim count, with $13K in brand drug costs.
Does Eric Spencer, MD prescribe opioids? ▼
Yes, Eric Spencer, MD had 66 opioid claims in 2024 with an opioid prescribing rate of 19.6%.
How many Undersea and Hyperbaric Medicine (Preventive Medicine) Physician providers are there in the US? ▼
There are 247 Undersea and Hyperbaric Medicine (Preventive Medicine) Physician providers across 41 states in the US. The average Undersea and Hyperbaric Medicine (Preventive Medicine) Physician provider writes 690 Medicare Part D claims per year.
What drugs does Eric Spencer, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Eric Spencer, MD's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Cefpodoxime Proxetil, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Eric Spencer, MD accept Medicare? ▼
Eric Spencer, MD appears in CMS Medicare data with 336 Part D claims and 233 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Eric Spencer, MD's credentials? ▼
Eric Spencer, MD's NPI is 1568417574 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.