NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1598175309 MD
Verify on CMS → Stephn Drywater, MD
Emergency Medicine Physician in Tahlequah, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 64,463 in Emergency 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
129
Medicare Part D claims · 66 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
71%
generic claims · 29% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
78.8/100
▼ 5 pts below national avg 83.5 · Above neutral
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Stephn Drywater, MD reported a CMS MIPS final score of 78.8/100 - below the 83.5 national average - and filed 129 Medicare Part D claims in 2023.
- 78.8/100
- MIPS score · -5 vs avg
- 129
- Part D claims, 2023
- 71%
- generic prescribing
- Likely
- board-certified (heuristic)
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 Stephn Drywater, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1598175309), first enumerated 05/01/2014.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 129 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 78.8/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- 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.
- 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 1598175309 · Emergency Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · MIPS-BELOW · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1598175309
- ENUM-MID 2014
- TAX-MEGA 64K Emergency Medicine
- MIPS-BELOW 78.8/100
- RX-LIGHT 129
- BOOK-LIGHT 685 in Oklahoma
- PHOTO-FINISH Kevin Bristowe · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Drywater · this …
Drywater · this provider
78.8 MIPS pts
- Paul Cowan · hig…
Paul Cowan
78.8 MIPS pts
- Peter Ramzy · near
Peter Ramzy
78.8 MIPS pts
- Haitham Alsahli …
Haitham Alsahli
78.8 MIPS pts
- Kevin Bristowe ·…
Kevin Bristowe
78.8 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Stephn Drywater, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
79 ≥ 23rd percentile 23% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Stephn Drywater, MD sits
This provider among emergency medicine physician peers
Across the 14,017 emergency medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Stephn Drywater, MD writes more Part D claims than 44% of them and scores higher on MIPS quality than 17% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one emergency medicine physician peer from a representative sample of 60; the gold marker is Stephn Drywater, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Stephn Drywater, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Stephn Drywater, MD?
Near national averagePrimary specialty
Emergency Medicine Physician
Medicare Part D claims
129 63% vs specialty avg
MIPS final score
78.8/100 4.7 pts vs avg
Specialty distribution in Oklahoma
How Emergency Medicine Physician compares to other specialties among Oklahoma providers
Medicare quality performance, MIPS
Stephn Drywater, MD's 2023 MIPS final score plotted against the Emergency Medicine Physician national average
- MIPS Final Score
- 78.8/100
- vs 83.5 national avg · 2023 performance year
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 | 1598175309 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/01/2014 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
78.7505
Final Score
Measured-score avg: 83.5
61.5971
Quality
65.1189
Cost
98
Promoting Interoperability
Reporting: Group practice
Brand vs generic prescribing mix · Above average
Stephn Drywater, MD - brand share 29.0%
Emergency Medicine Physician average
29% brand-name claims vs 71% generic, on 129 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.
129
Total Claims
$2K
Total Drug Cost
66
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 131
- Total Day Supply
- 1,746
- Brand vs Generic
- 29% brand / 71% generic
- Brand Drug Cost
- $1K
- Generic Drug Cost
- $938
- Antibiotic Claims
- 46
Patient Demographics
- Average Patient Age
- 66.8 years
- Avg HCC Risk Score
- 1.77
- Gender Split
- 73% female / 27% male
- Age Distribution
- <65: 23, 65-74: 25, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Stephn Drywater, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Albuterol Sulfate …
Albuterol Sulfate Hfa
31 claims
- Prednisone
Prednisone
19 claims
- Ondansetron Odt 12
Ondansetron Odt
12 claims
- Cephalexin 11
Cephalexin
11 claims
| Drug | Claims |
|---|---|
| Albuterol Sulfate Hfa Albuterol Sulfate | 31 |
| Prednisone | 19 |
| Ondansetron Odt Ondansetron | 12 |
| Cephalexin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Emergency Medicine Physician Overview
How Stephn Drywater, MD fits within the Emergency Medicine Physician landscape nationally.
64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider
Stephn Drywater, MD's 129 claims are below the specialty average of 352.
Nationwide Emergency Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Drywater, both outside Oklahoma so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (78.8 here).
Same NPPES enumeration year (2014)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Emergency Medicine Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Drywater.
One of 685 Emergency Medicine Physician providers enrolled in Oklahoma, 5 are shown here.
Dr. David Abercrombie
MD
Oklahoma City, OK
Dr. Bobby Abernathy
D.O.
Tulsa, OK
Dr. Tyler Adams
D.O.
Lawton, OK
Dr. Tolulope Adepoju
MD
Norman, OK
Tinuola Agbabiaka
Oklahoma City, OK
Compare Emergency Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Stephn Drywater, MD's specialty? ▼
Stephn Drywater, MD specializes in Emergency Medicine Physician and practices in Tahlequah, Oklahoma. Credentials: MD.
How much does Stephn Drywater, MD prescribe under Medicare Part D? ▼
In 2023, Stephn Drywater, MD wrote 129 Medicare Part D claims totaling $2K in drug costs for 66 beneficiaries.
What is Stephn Drywater, MD's Medicare quality score? ▼
Stephn Drywater, MD has a CMS MIPS Final Score of 78.8/100 (Quality: 61.6, Cost: 65.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Stephn Drywater, MD located? ▼
Stephn Drywater, MD is located at 100 S BLISS AVE, Tahlequah, OK, 74464. Phone: (918) 458-3100.
What is Stephn Drywater, MD's NPI number? ▼
Stephn Drywater, MD's National Provider Identifier (NPI) is 1598175309, issued on 05/01/2014.
Does Stephn Drywater, MD prescribe more brand-name or generic drugs? ▼
Stephn Drywater, MD's prescribing is 29% brand-name and 71% generic drugs by claim count, with $1K in brand drug costs.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does Stephn Drywater, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Stephn Drywater, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Prednisone, Ondansetron Odt. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stephn Drywater, MD accept Medicare? ▼
Stephn Drywater, MD appears in CMS Medicare data with 129 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stephn Drywater, MD's credentials? ▼
Stephn Drywater, MD's NPI is 1598175309 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.