NPI registry status
Active
2026 NPPES data Neurological Surgery Physician NPI 1851311088 MD
Verify on CMS → David Adler, MD
Neurological Surgery Physician in Portland, 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 8,100 in Neurological Surgery 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
78
Medicare Part D claims · 38 beneficiaries · Neurological Surgery Physician avg: 181
Industry payments
$1.0K
19 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Adler, MD filed 78 Medicare Part D claims in 2023 as a Neurological Surgery Physician in Portland, Oregon.
- 78
- Part D claims, 2023
- $1.0K
- industry payments (Sunshine Act)
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.
David Adler, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
78 0th percentile higher than 0% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
◑
Board-eligible specialty (heuristic, not verified)
David Adler, 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 David Adler, MD?
Quality data not reportedPrimary specialty
Neurological Surgery Physician
Medicare Part D claims
78 57% vs specialty avg
Specialty distribution in Oregon
How Neurological Surgery 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 Neurological Surgery 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).
David Adler, MD appears in the CMS NPPES registry as a Neurological Surgery Physician provider holding MD credentials at 1040 NW 22ND AVE, Portland, OR, 97210, with a listed phone of (503) 796-2743. NPI 1851311088 was issued on 07/20/2006.
Medicare Part D records for calendar year 2023 show 78 prescription claims written by this provider, covering 38 Medicare beneficiaries and totaling roughly $548 in drug spend, with an opioid prescribing rate of 57.7%.
Neurological Surgery Physician is a mid-sized specialty nationwide, with 8,100 enrolled providers across 53 states and an average of 181 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1851311088 |
|---|---|
| Specialty | Neurological Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/20/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for David Adler, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.0K
Largest payer
Providence Medical Technology, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
78
Total Claims
$548
Total Drug Cost
38
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 78
- Total Day Supply
- 647
- Generic Drug Cost
- $509
- Opioid Claims
- 45 (57.7% rate)
Patient Demographics
- Average Patient Age
- 71.5 years
- Avg HCC Risk Score
- 1.32
- Gender Split
- 58% female / 42% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 28 |
| Hydromorphone Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurological Surgery Physician Overview
How David Adler, MD fits within the Neurological Surgery Physician landscape nationally.
8,100
Neurological Surgery Physician Providers in US
53
States with Neurological Surgery Physician
181
Avg Claims per Provider
David Adler, MD's 78 claims are below the specialty average of 181.
Nearby Neurological Surgery Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Adler.
Dr. Keyvan Abtin
MD
Hillsboro, OR
Dr. Feridun Acar
MD
Portland, OR
Dr. Carmina Angeles
MD
Eugene, OR
Dr. David Antezana
MD
Portland, OR
Dr. Martin Baggenstos
M.D.
Portland, OR
Compare Neurological Surgery Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Oregon medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Neurological Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Oregon
Frequently Asked Questions
What is David Adler, MD's specialty? ▼
David Adler, MD specializes in Neurological Surgery Physician and practices in Portland, Oregon. Credentials: MD.
How much does David Adler, MD prescribe under Medicare Part D? ▼
In 2023, David Adler, MD wrote 78 Medicare Part D claims totaling $548 in drug costs for 38 beneficiaries.
Where is David Adler, MD located? ▼
David Adler, MD is located at 1040 NW 22ND AVE, Portland, OR, 97210. Phone: (503) 796-2743.
What is David Adler, MD's NPI number? ▼
David Adler, MD's National Provider Identifier (NPI) is 1851311088, issued on 07/20/2006.
Does David Adler, MD prescribe opioids? ▼
Yes, David Adler, MD had 45 opioid claims in 2023 with an opioid prescribing rate of 57.7%.
How many Neurological Surgery Physician providers are there in the US? ▼
There are 8,100 Neurological Surgery Physician providers across 53 states in the US. The average Neurological Surgery Physician provider writes 181 Medicare Part D claims per year.
What drugs does David Adler, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, David Adler, MD's most frequently prescribed drugs include Oxycodone Hcl, Hydromorphone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Adler, MD accept Medicare? ▼
David Adler, MD appears in CMS Medicare data with 78 Part D claims and 38 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Adler, MD's credentials? ▼
David Adler, MD's NPI is 1851311088 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 (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
Compiled from official public sources by the PlainDoctor editorial team.