NPI registry status
Active
2026 NPPES data Surgical Physician Assistant NPI 1386231645 PA-C
Verify on CMS → Walter Dowling, PA-C
Surgical Physician Assistant in Portland, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,380 in Surgical Physician Assistant, 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
2K
Medicare Part D claims · 243 beneficiaries · Surgical Physician Assistant avg: 341
Generic prescribing
91%
generic claims · 8% 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
Walter Dowling, PA-C filed 1,756 Medicare Part D claims in 2024 as a Surgical Physician Assistant in Portland, Maine, prescribing 91% generic.
- 2K
- Part D claims, 2024
- 91%
- generic prescribing
- ≥82nd
- 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 Walter Dowling, PA-C
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 1386231645), first enumerated 12/21/2020.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,756 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 1386231645 · Surgical Physician Assistant
NPI-10 · ENUM-RECENT · TAX-MID · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1386231645
- ENUM-RECENT 2020
- TAX-MID 16K Surgical Physician
- RX-MID 1,756
- BOOK-THIN 147 in Maine
- PHOTO-ENUM Krista Huber · 2020
Walter Dowling, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,756 ≥ 82nd percentile 82% 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 Walter Dowling, PA-C?
Quality data not reportedPrimary specialty
Surgical Physician Assistant
Medicare Part D claims
1,756 5× vs specialty avg
Specialty distribution in Maine
How Surgical Physician Assistant compares to other specialties among Maine 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 Surgical Physician Assistant. 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 | 1386231645 |
|---|---|
| Specialty | Surgical Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 12/21/2020 |
Hospital and facility affiliations
Facilities where Walter Dowling, PA-C 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.
Mainehealth
Portland, ME
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
Walter Dowling, PA-C - brand share 8.0%
Surgical Physician Assistant average
8% brand-name claims vs 91% generic, on 1,756 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.
1,756
Total Claims
$98K
Total Drug Cost
243
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 3,097.133
- Total Day Supply
- 87,288
- Brand vs Generic
- 8% brand / 91% generic
- Brand Drug Cost
- $78K
- Generic Drug Cost
- $19K
- Opioid Claims
- 63 (3.6% rate)
- Antibiotic Claims
- 37
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 44% female / 56% male
- Age Distribution
- <65: 31, 65-74: 112, 75-84: 71, 85+: 29
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Walter Dowling, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
103 claims
- Amlodipine Besylate
Amlodipine Besylate
66 claims
- Tamsulosin Hcl
Tamsulosin Hcl
60 claims
- Lisinopril
Lisinopril
57 claims
- Losartan Potassium
Losartan Potassium
55 claims
- Gabapentin
Gabapentin
47 claims
- Levothyroxine Sodium
Levothyroxine Sodium
46 claims
- Omeprazole
Omeprazole
44 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 103 |
| Amlodipine Besylate | 66 |
| Tamsulosin Hcl | 60 |
| Lisinopril | 57 |
| Losartan Potassium | 55 |
| Gabapentin | 47 |
| Levothyroxine Sodium | 46 |
| Omeprazole | 44 |
| Hydrochlorothiazide | 39 |
| Metoprolol Succinate | 39 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgical Physician Assistant Overview
How Walter Dowling, PA-C fits within the Surgical Physician Assistant landscape nationally.
16,380
Surgical Physician Assistant Providers in US
54
States with Surgical Physician Assistant
341
Avg Claims per Provider
Walter Dowling, PA-C's 1,756 claims are above the specialty average of 341.
Nationwide Surgical Physician Assistant peers with similar MIPS or enrollment year
Two federal-record peer sets for Dowling, both outside Maine so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Surgical Physician Assistant Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Dowling.
One of 147 Surgical Physician Assistant providers enrolled in Maine, 5 are shown here.
Lawrence Adrian
P.A.-C
Portland, ME
Brent Albright
PA
Biddeford, ME
Elizabeth Anderson
PA-C
Scarborough, ME
Sadie Austin
PA-C
Bangor, ME
Angela Bacchiocchi
PA-C
Bangor, ME
Compare Surgical Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Walter Dowling, PA-C's specialty? ▼
Walter Dowling, PA-C specializes in Surgical Physician Assistant and practices in Portland, Maine. Credentials: PA-C.
How much does Walter Dowling, PA-C prescribe under Medicare Part D? ▼
In 2024, Walter Dowling, PA-C wrote 1,756 Medicare Part D claims totaling $98K in drug costs for 243 beneficiaries.
Where is Walter Dowling, PA-C located? ▼
Walter Dowling, PA-C is located at 22 BRAMHALL ST, Portland, ME, 04102. Phone: (207) 662-2934.
What is Walter Dowling, PA-C's NPI number? ▼
Walter Dowling, PA-C's National Provider Identifier (NPI) is 1386231645, issued on 12/21/2020.
Does Walter Dowling, PA-C prescribe more brand-name or generic drugs? ▼
Walter Dowling, PA-C's prescribing is 8% brand-name and 91% generic drugs by claim count, with $78K in brand drug costs.
Does Walter Dowling, PA-C prescribe opioids? ▼
Yes, Walter Dowling, PA-C had 63 opioid claims in 2024 with an opioid prescribing rate of 3.6%.
How many Surgical Physician Assistant providers are there in the US? ▼
There are 16,380 Surgical Physician Assistant providers across 54 states in the US. The average Surgical Physician Assistant provider writes 341 Medicare Part D claims per year.
What drugs does Walter Dowling, PA-C prescribe most often? ▼
Based on 2024 Medicare Part D data, Walter Dowling, PA-C's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Walter Dowling, PA-C accept Medicare? ▼
Walter Dowling, PA-C appears in CMS Medicare data with 1,756 Part D claims and 243 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Walter Dowling, PA-C's credentials? ▼
Walter Dowling, PA-C's NPI is 1386231645 with credentials PA-C. 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.