NPI registry status
Active
2026 NPPES data Neurological Surgery Physician NPI 1679890701 M.D.
Verify on CMS → Daniel Harwell, M.D.
Neurological Surgery Physician in Tulsa, 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 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
541
Medicare Part D claims · 150 beneficiaries · Neurological Surgery Physician avg: 181
Generic prescribing
97%
generic claims · 3% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.0K
20 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Daniel Harwell, M.D. filed 541 Medicare Part D claims in 2023 as a Neurological Surgery Physician in Tulsa, Oklahoma, prescribing 97% generic.
- 541
- Part D claims, 2023
- 97%
- 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.
Daniel Harwell, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
541 Top 34% higher than 66% 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 certification likely (heuristic, not verified)
Daniel Harwell, 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 Daniel Harwell, M.D.?
Quality data not reportedPrimary specialty
Neurological Surgery Physician
Medicare Part D claims
541 199% vs specialty avg
Specialty distribution in Oklahoma
How Neurological Surgery Physician compares to other specialties among Oklahoma 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).
Daniel Harwell, M.D. appears in the CMS NPPES registry as a Neurological Surgery Physician provider holding M.D. credentials at 6802 S OLYMPIA AVE, Tulsa, OK, 74132, with a listed phone of (918) 749-0762. NPI 1679890701 was issued on 04/29/2010.
Medicare Part D records for calendar year 2023 show 541 prescription claims written by this provider, covering 150 Medicare beneficiaries and totaling roughly $14K in drug spend, split 3% brand-name and 97% generic by claim count, with an opioid prescribing rate of 44.9%.
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 | 1679890701 |
|---|---|
| Specialty | Neurological Surgery Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 04/29/2010 |
Hospital and facility affiliations
Facilities where Daniel Harwell, 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.
Oklahoma Spine And Brain Institute LLP
Tulsa, OK
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Daniel Harwell, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.0K
Largest payer
SI-BONE, 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.
Brand vs generic prescribing mix · Generic-heavy
Daniel Harwell, M.D. - brand share 3.0%
Neurological Surgery Physician average
3% brand-name claims vs 97% generic, on 541 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.
541
Total Claims
$14K
Total Drug Cost
150
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 568
- Total Day Supply
- 11,080
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $1K
- Generic Drug Cost
- $13K
- Opioid Claims
- 243 (44.9% rate)
- Antibiotic Claims
- 16
Patient Demographics
- Average Patient Age
- 66.8 years
- Avg HCC Risk Score
- 1.55
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 49, 65-74: 62, 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 Daniel Harwell, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
152 claims
- Cyclobenzaprine Hcl
Cyclobenzaprine Hcl
94 claims
- Oxycodone-Acetamin… 52
Oxycodone-Acetaminophen
52 claims
- Naloxone Hcl 46
Naloxone Hcl
46 claims
- Gabapentin 41
Gabapentin
41 claims
- Tizanidine Hcl 31
Tizanidine Hcl
31 claims
- Oxycodone Hcl 28
Oxycodone Hcl
28 claims
- Methylprednisolone 15
Methylprednisolone
15 claims
| Drug | Claims |
|---|---|
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 152 |
| Cyclobenzaprine Hcl | 94 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 52 |
| Naloxone Hcl | 46 |
| Gabapentin | 41 |
| Tizanidine Hcl | 31 |
| Oxycodone Hcl | 28 |
| Methylprednisolone | 15 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 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 Daniel Harwell, M.D. 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
Daniel Harwell, M.D.'s 541 claims are above the specialty average of 181.
Nearby Neurological Surgery Physician Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Harwell.
Dr. Joel Abramovitz
MD
Tulsa, OK
Dr. James Alvis
MD
Norman, OK
Dr. Mason Andrews
MD
Enid, OK
Tyler Auschwitz
Tulsa, OK
Dr. Karl Balsara
MD
Oklahoma City, OK
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 Oklahoma 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 Oklahoma
Frequently Asked Questions
What is Daniel Harwell, M.D.'s specialty? ▼
Daniel Harwell, M.D. specializes in Neurological Surgery Physician and practices in Tulsa, Oklahoma. Credentials: M.D..
How much does Daniel Harwell, M.D. prescribe under Medicare Part D? ▼
In 2023, Daniel Harwell, M.D. wrote 541 Medicare Part D claims totaling $14K in drug costs for 150 beneficiaries.
Where is Daniel Harwell, M.D. located? ▼
Daniel Harwell, M.D. is located at 6802 S OLYMPIA AVE, Tulsa, OK, 74132. Phone: (918) 749-0762.
What is Daniel Harwell, M.D.'s NPI number? ▼
Daniel Harwell, M.D.'s National Provider Identifier (NPI) is 1679890701, issued on 04/29/2010.
Does Daniel Harwell, M.D. prescribe more brand-name or generic drugs? ▼
Daniel Harwell, M.D.'s prescribing is 3% brand-name and 97% generic drugs by claim count, with $1K in brand drug costs.
Does Daniel Harwell, M.D. prescribe opioids? ▼
Yes, Daniel Harwell, M.D. had 243 opioid claims in 2023 with an opioid prescribing rate of 44.9%.
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 Daniel Harwell, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Daniel Harwell, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Cyclobenzaprine Hcl, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Daniel Harwell, M.D. accept Medicare? ▼
Daniel Harwell, M.D. appears in CMS Medicare data with 541 Part D claims and 150 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Daniel Harwell, M.D.'s credentials? ▼
Daniel Harwell, M.D.'s NPI is 1679890701 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 (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.