NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1245453315 M.D.
Verify on CMS → Mary Frances Lowdermilk, M.D.
Family Medicine 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 150,125 in Family 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
5K
Medicare Part D claims · 416 beneficiaries · Family Medicine Physician avg: 4K
Generic prescribing
88%
generic claims · 12% 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
Mary Frances Lowdermilk, M.D. filed 4,912 Medicare Part D claims in 2024 as a Family Medicine Physician in Portland, Oregon, prescribing 88% generic.
- 5K
- Part D claims, 2024
- 88%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥93rd
- 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 Mary Frances Lowdermilk, M.D.
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 1245453315), first enumerated 04/10/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 4,912 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
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 1245453315 · Family Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-MID · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1245453315
- ENUM-MID 2007
- TAX-MEGA 150K Family Medicine
- RX-MID 4,912
- BOOK-LIGHT 2,711 in Oregon
- PHOTO-ENUM Marcy Wiemers · 2007
Mary Frances Lowdermilk, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
4,912 ≥ 93rd percentile 93% 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)
Mary Frances Lowdermilk, 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 Mary Frances Lowdermilk, M.D.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
4,912 40% vs specialty avg
Specialty distribution in Oregon
How Family 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 Family 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 | 1245453315 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 04/10/2007 |
Hospital and facility affiliations
Facilities where Mary Frances Lowdermilk, 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.
Rolling Hills Clinic
Corning, CA
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 · Typical
Mary Frances Lowdermilk, M.D. - brand share 12.0%
Family Medicine Physician average
12% brand-name claims vs 88% generic, on 4,912 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.
4,912
Total Claims
$431K
Total Drug Cost
416
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 11,188.533
- Total Day Supply
- 328,664
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $348K
- Generic Drug Cost
- $79K
- Opioid Claims
- 139 (2.8% rate)
- Antibiotic Claims
- 28
Patient Demographics
- Average Patient Age
- 76.6 years
- Avg HCC Risk Score
- 1.09
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 13, 65-74: 166, 75-84: 172, 85+: 65
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Mary Frances Lowdermilk, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Atorvastatin Calcium
Atorvastatin Calcium
411 claims
- Levothyroxine Sodium
Levothyroxine Sodium
242 claims
- Lisinopril
Lisinopril
192 claims
- Amlodipine Besylate
Amlodipine Besylate
184 claims
- Losartan Potassium
Losartan Potassium
180 claims
- Omeprazole 156
Omeprazole
156 claims
- Metformin Hcl Er 117
Metformin Hcl Er
117 claims
- Simvastatin 117
Simvastatin
117 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 411 |
| Levothyroxine Sodium | 242 |
| Lisinopril | 192 |
| Amlodipine Besylate | 184 |
| Losartan Potassium | 180 |
| Omeprazole | 156 |
| Metformin Hcl Er Metformin Hcl | 117 |
| Simvastatin | 117 |
| Sertraline Hcl | 109 |
| Tamsulosin Hcl | 103 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Mary Frances Lowdermilk, M.D. fits within the Family Medicine Physician landscape nationally.
150,125
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,519
Avg Claims per Provider
Mary Frances Lowdermilk, M.D.'s 4,912 claims are above the specialty average of 3,519.
Nationwide Family Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Lowdermilk, both outside Oregon so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Medicine Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Lowdermilk.
One of 2,711 Family Medicine Physician providers enrolled in Oregon, 5 are shown here.
Dr. Roxana Abbott
DO
Portland, OR
Dr. David Abdun-Nur
M.D.
Grants Pass, OR
Dr. Traci Ackron
D.O.
Hillsboro, OR
Dr. Orlando Acosta
MD
Hood River, OR
Dr. Michele Adamcak
D.O.
Tigard, OR
Compare Family Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mary Frances Lowdermilk, M.D.'s specialty? ▼
Mary Frances Lowdermilk, M.D. specializes in Family Medicine Physician and practices in Portland, Oregon. Credentials: M.D..
How much does Mary Frances Lowdermilk, M.D. prescribe under Medicare Part D? ▼
In 2024, Mary Frances Lowdermilk, M.D. wrote 4,912 Medicare Part D claims totaling $431K in drug costs for 416 beneficiaries.
Where is Mary Frances Lowdermilk, M.D. located? ▼
Mary Frances Lowdermilk, M.D. is located at 20 N SKIDMORE ST, Portland, OR, 97217. Phone: (888) 663-6331.
What is Mary Frances Lowdermilk, M.D.'s NPI number? ▼
Mary Frances Lowdermilk, M.D.'s National Provider Identifier (NPI) is 1245453315, issued on 04/10/2007.
Does Mary Frances Lowdermilk, M.D. prescribe more brand-name or generic drugs? ▼
Mary Frances Lowdermilk, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $348K in brand drug costs.
Does Mary Frances Lowdermilk, M.D. prescribe opioids? ▼
Yes, Mary Frances Lowdermilk, M.D. had 139 opioid claims in 2024 with an opioid prescribing rate of 2.8%.
How many Family Medicine Physician providers are there in the US? ▼
There are 150,125 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,519 Medicare Part D claims per year.
What drugs does Mary Frances Lowdermilk, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Mary Frances Lowdermilk, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary Frances Lowdermilk, M.D. accept Medicare? ▼
Mary Frances Lowdermilk, M.D. appears in CMS Medicare data with 4,912 Part D claims and 416 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary Frances Lowdermilk, M.D.'s credentials? ▼
Mary Frances Lowdermilk, M.D.'s NPI is 1245453315 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 (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.