Dr. Dan Wyatt Hahn , MD
General Practice • Dallas, TX
4144 N Central Expy, Suite 360
Dallas, TX 752043140
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 14, 2007; this date does not establish years in practice.
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Published CMS data list 31 Original Medicare Part B services in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Published rows only; this is not a quality measure.
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Published Part B service records, 2019:
- 99204 — New patient outpatient office visit: 18 service units.
- 99203 — New patient outpatient office visit: 13 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2018 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2019). CPT notice
See the full table · Guide: How to read Medicare Part B data
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Published CMS data list 33 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Buprenorphine-Naloxone (Buprenorphine Hcl/Naloxone Hcl) — 33 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 80% of clinicians listed under General Practice in Dallas, TX (2024, 25 clinicians with data). Median for this group: 268. Middle half: 78 to 3,460.
Fewer Part D prescriptions than 80% of clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: 452. Middle half: 78 to 2,858.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 11 in 2018 to 31 in 2019.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2018–2019.
Practice Location & Contact Primary Location
4144 N Central Expy
Suite 360
Dallas, TX 752043140
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare-allowed amount
About $4,387 in 2019
The total amount Medicare approved for these services in 2019. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019.
Paid by Medicare
About $1,768 in 2019
The part of the Medicare-allowed amount that Medicare itself paid in 2019, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2019.
30-day fills
33 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,602 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $28.61 in 2024
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2024.
NPI first issued
2007
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Dallas and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under General Practice in Dallas, TX (2024, 25 clinicians with data). Median for this group: 268. Middle half: 78 to 3,460.
Fewer Part D prescriptions than 80% of clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: 452. Middle half: 78 to 2,858.
Part D drug cost
A lower Part D drug cost than 75% of clinicians listed under General Practice in Dallas, TX (2024, 25 clinicians with data). Median for this group: $19,763. Middle half: $1,602 to $275,063.
A lower Part D drug cost than 70% of clinicians listed under General Practice in Texas (2024, 221 clinicians with data). Median for this group: $17,804. Middle half: $993 to $222,529.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Hahn are from 2019.
83 active clinicians are listed under General Practice with a practice address in Dallas, TX (1,066 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Dallas
8.4% of these 83 clinicians have the CMS telehealth indicator.
24.1% of these 83 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services went from 11 in 2018 to 31 in 2019.
- 2018: 11
- 2019: 31
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Medicare-allowed amount
Medicare-allowed amount increased 146% from $1,784 in 2018 to $4,387 in 2019.
- 2018: $1,784
- 2019: $4,387
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Paid by Medicare
Paid by Medicare increased 40% from $1,264 in 2018 to $1,768 in 2019.
- 2018: $1,264
- 2019: $1,768
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 17 in 2020 to 33 in 2024.
- 2020: 17
- 2021: 50
- 2022: 34
- 2023: 40
- 2024: 33
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30-day fills
30-day fills went from 17 in 2020 to 33 in 2024.
- 2020: 17
- 2021: 50
- 2022: 34
- 2023: 40
- 2024: 33
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Part D drug cost
Part D drug cost decreased 75% from $6,319 in 2020 to $1,602 in 2024.
- 2020: $6,319
- 2021: $11,151
- 2022: $3,030
- 2023: $15,812
- 2024: $1,602
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $18.66 in 2019 to $28.61 in 2024.
- 2019: $18.66
- 2021: $22.99
- 2024: $28.61
Sources: CMS Medicare Physician & Other Practitioners (2019), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2024 (payments made January 1 – December 31, 2024): fewer than 11 records totaling $28.61.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Braeburn Inc. |
Food and Beverage
In-kind items and services
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BRIXADI | General | $28.61 |
Source: CMS Open Payments, program year 2024, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2017–2018 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2018–2019; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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18 | 18 | $315.00 | $165.16 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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13 | 13 | $205.00 | $108.79 |
Source: CMS Part B by Provider and Service, 2019; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Buprenorphine-Naloxone | Buprenorphine Hcl/Naloxone Hcl | 33 | 369 | $1,601.52 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
NUCC Taxonomy Code: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
NUCC Taxonomy Code: 207L00000X
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Anesthesiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Osteopathic Medicine (D.O.)
Anesthesiology
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Anesthesiology (license number reported to NPPES: TX BP1-0017400)
NPI status registered as active in NPPES database
Registered at 4144 N CENTRAL EXPY, SUITE 360, DALLAS, TX 752043140 (Tel: 2148277460)
Registered at 8234 STONY CREEK DR, DALLAS, TX 752285815 (Tel: 2142236300)
Recorded as DAN HAHN, MD
Anesthesiology (license number reported to NPPES: TX M9335)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other General Practices in Dallas
- Dr. Jesal Shah, MD
- Dr. Daisy Ryan, MD
- Dr. Christian Renna, DO
- Dr. Angela Orlino, MD
- Dr. Christopher Chumley, MD
- Dr. Timothy Malone, DO
Mailing Address
8234 Stony Creek Dr
Dallas, TX 752285815
Phone: 2142236300