NPI registry status
Active
2026 NPPES data Obstetrics & Gynecology Physician NPI 1053387431 MD
Verify on CMS → Mark Parra, MD
Obstetrics & Gynecology Physician in Klamath Falls, 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 44,326 in Obstetrics & Gynecology 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
61
Medicare Part D claims · 30 beneficiaries · Obstetrics & Gynecology Physician avg: 179
Generic prescribing
79%
generic claims · 21% 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
Mark Parra, MD filed 61 Medicare Part D claims in 2023 as an Obstetrics & Gynecology Physician in Klamath Falls, Oregon, prescribing 79% generic.
- 61
- Part D claims, 2023
- 79%
- generic prescribing
- ≥0th
- 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 1053387431 · Obstetrics & Gynecology Physician
NPI-10 · ENUM-LEGACY · TAX-MID · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1053387431
- ENUM-LEGACY 2006
- TAX-MID 44K Obstetrics &
- RX-TRACE 61
- BOOK-LIGHT 663 in Oregon
- PHOTO-ENUM Charles Lais · 2006
Mark Parra, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
61 ≥ 0th percentile 0% 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-eligible specialty (heuristic, not verified)
Mark Parra, 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 Mark Parra, MD?
Quality data not reportedPrimary specialty
Obstetrics & Gynecology Physician
Medicare Part D claims
61 66% vs specialty avg
Specialty distribution in Oregon
How Obstetrics & Gynecology 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 Obstetrics & Gynecology 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 | 1053387431 |
|---|---|
| Specialty | Obstetrics & Gynecology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 02/27/2006 |
Brand vs generic prescribing mix · Typical
Mark Parra, MD - brand share 21.0%
Obstetrics & Gynecology Physician average
21% brand-name claims vs 79% generic, on 61 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.
61
Total Claims
$7K
Total Drug Cost
30
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 91
- Total Day Supply
- 1,939
- Brand vs Generic
- 21% brand / 79% generic
- Brand Drug Cost
- $6K
- Generic Drug Cost
- $2K
Patient Demographics
- Average Patient Age
- 72.6 years
- Avg HCC Risk Score
- 0.75
- Gender Split
- 100% female / 0% male
Obstetrics & Gynecology Physician Overview
How Mark Parra, MD fits within the Obstetrics & Gynecology Physician landscape nationally.
44,326
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider
Mark Parra, MD's 61 claims are below the specialty average of 179.
Nationwide Obstetrics & Gynecology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Parra, 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 Obstetrics & Gynecology Physician Providers in Oregon
Other clinicians with the same primary specialty enrolled in Oregon, drawn from the same CMS NPPES roster as Parra.
One of 663 Obstetrics & Gynecology Physician providers enrolled in Oregon, 5 are shown here.
Dr. Chidimma Abanulo
M.D.
Hillsboro, OR
Dr. Heather Abe
DO
Beaverton, OR
Dr. Diana Ackerman
M.D.
Bend, OR
Dr. Kerrie Adams
M.D.
Tualatin, OR
Dr. Samantha Adkins
MD
Milwaukie, OR
Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Mark Parra, MD's specialty? ▼
Mark Parra, MD specializes in Obstetrics & Gynecology Physician and practices in Klamath Falls, Oregon. Credentials: MD.
How much does Mark Parra, MD prescribe under Medicare Part D? ▼
In 2023, Mark Parra, MD wrote 61 Medicare Part D claims totaling $7K in drug costs for 30 beneficiaries.
Where is Mark Parra, MD located? ▼
Mark Parra, MD is located at 2640 BIEHN STREET, Klamath Falls, OR, 97601. Phone: (541) 205-6890.
What is Mark Parra, MD's NPI number? ▼
Mark Parra, MD's National Provider Identifier (NPI) is 1053387431, issued on 02/27/2006.
Does Mark Parra, MD prescribe more brand-name or generic drugs? ▼
Mark Parra, MD's prescribing is 21% brand-name and 79% generic drugs by claim count, with $6K in brand drug costs.
How many Obstetrics & Gynecology Physician providers are there in the US? ▼
There are 44,326 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
Does Mark Parra, MD accept Medicare? ▼
Mark Parra, MD appears in CMS Medicare data with 61 Part D claims and 30 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mark Parra, MD's credentials? ▼
Mark Parra, MD's NPI is 1053387431 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
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.