Dr. Haley Thun , MD
Internal Medicine โข Philadelphia, PA
3900 Woodland Ave
Philadelphia, PA 191044551
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 May 18, 2015; this date does not establish years in practice.
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Published CMS data list 273 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 116 service units.
- 99231 โ Subsequent hospital care with straightforward or low level of medical decision making, per day: 52 service units.
- 99215 โ Established patient outpatient office visit: 46 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 6 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 819 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Ozempic (Semaglutide) โ 125 prescription fills, including refills.
- Lisinopril โ 97 prescription fills, including refills.
- Amlodipine Besylate โ 75 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 27 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Internal Medicine in Philadelphia, PA (2024, 722 clinicians with data). Median for this group: 318. Middle half: 159 to 656.
Fewer Medicare Part B services than 70% of clinicians listed under Internal Medicine in Pennsylvania (2024, 3,721 clinicians with data). Median for this group: 540. Middle half: 228 to 1,067.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 341 in 2020 to 273 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
3900 Woodland Ave
Philadelphia, PA 191044551
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
Internal Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
115 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $25,244 in 2024
The total amount Medicare approved for these services in 2024. 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 โ by Provider and Service, 2024.
Paid by Medicare
About $18,969 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, 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 โ by Provider and Service, 2024.
30-day fills
1,439 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
$220,671 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 โ by Provider and Drug, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
NPI first issued
2015
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, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
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, CMS release of October 2, 2026.
Can order Medicare-covered services
CMS lists Dr. Thun as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Philadelphia and Pennsylvania
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Internal Medicine in Philadelphia, PA (2024, 722 clinicians with data). Median for this group: 318. Middle half: 159 to 656.
Fewer Medicare Part B services than 70% of clinicians listed under Internal Medicine in Pennsylvania (2024, 3,721 clinicians with data). Median for this group: 540. Middle half: 228 to 1,067.
Medicare-allowed amount
Close to the middle for clinicians listed under Internal Medicine in Philadelphia, PA (2024, 722 clinicians with data). Median for this group: $30,478. Middle half: $15,430 to $66,105.
A lower Medicare-allowed amount than 70% of clinicians listed under Internal Medicine in Pennsylvania (2024, 3,721 clinicians with data). Median for this group: $52,749. Middle half: $22,253 to $100,046.
Paid by Medicare
Close to the middle for clinicians listed under Internal Medicine in Philadelphia, PA (2024, 722 clinicians with data). Median for this group: $22,927. Middle half: $11,503 to $50,689.
A lower Medicare payment amount than 70% of clinicians listed under Internal Medicine in Pennsylvania (2024, 3,721 clinicians with data). Median for this group: $40,066. Middle half: $17,093 to $76,855.
Medicare Part D prescriptions
More Part D prescriptions than 65% of clinicians listed under Internal Medicine in Philadelphia, PA (2024, 896 clinicians with data). Median for this group: 228. Middle half: 72 to 1,831.
Close to the middle for clinicians listed under Internal Medicine in Pennsylvania (2024, 4,072 clinicians with data). Median for this group: 595. Middle half: 94 to 4,937.
Part D drug cost
A higher Part D drug cost than 70% of clinicians listed under Internal Medicine in Philadelphia, PA (2024, 896 clinicians with data). Median for this group: $21,587. Middle half: $1,350 to $224,583.
A higher Part D drug cost than 60% of clinicians listed under Internal Medicine in Pennsylvania (2024, 4,072 clinicians with data). Median for this group: $50,964. Middle half: $2,003 to $418,744.
1,768 active clinicians are listed under Internal Medicine with a practice address in Philadelphia, PA (7,256 in Pennsylvania).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Philadelphia
14.1% of these 1,768 clinicians have the CMS telehealth indicator.
48.8% of these 1,768 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 decreased 20% from 341 in 2020 to 273 in 2024.
- 2020: 341
- 2021: 360
- 2022: 346
- 2023: 192
- 2024: 273
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Medicare-allowed amount
Medicare-allowed amount decreased 18% from $30,612 in 2020 to $25,244 in 2024.
- 2020: $30,612
- 2021: $34,325
- 2022: $33,193
- 2023: $18,017
- 2024: $25,244
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Paid by Medicare
Paid by Medicare decreased 17% from $22,929 in 2020 to $18,969 in 2024.
- 2020: $22,929
- 2021: $24,349
- 2022: $23,760
- 2023: $12,003
- 2024: $18,969
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 48% from 554 in 2020 to 819 in 2024.
- 2020: 554
- 2021: 858
- 2022: 1,133
- 2023: 1,126
- 2024: 819
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30-day fills
30-day fills increased 33% from 1,082 in 2020 to 1,439 in 2024.
- 2020: 1,082
- 2021: 1,628
- 2022: 2,108
- 2023: 2,119
- 2024: 1,439
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Part D drug cost
Part D drug cost increased 215% from $70,165 in 2020 to $220,671 in 2024.
- 2020: $70,165
- 2021: $171,607
- 2022: $361,906
- 2023: $453,546
- 2024: $220,671
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018โ2023 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 โ by Provider and Service data, 2019โ2024; 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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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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116 | 61 | $249.06 | $93.17 |
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99231
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes
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52 | 20 | $176.00 | $47.52 |
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99215
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
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46 | 31 | $403.00 | $138.29 |
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99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
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27 | 16 | $248.00 | $75.57 |
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99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
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16 | 14 | $342.00 | $113.72 |
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99239
Hospital discharge day management, more than 30 minutes
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16 | 16 | $360.00 | $109.03 |
Source: CMS Part B by Provider and Service, 2024; 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 |
|---|---|---|---|---|---|
| Ozempic | Semaglutide | 125 | 3,514 | $122,648.32 | 22 |
| Lisinopril | Lisinopril | 97 | 8,250 | $475.06 | 39 |
| Amlodipine Besylate | Amlodipine Besylate | 75 | 5,790 | $684.60 | 29 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 60 | 972 | $1,945.18 | 13 |
| Metformin Hcl Er | Metformin Hcl | 52 | 3,660 | $969.67 | 21 |
| Diclofenac Sodium | Diclofenac Sodium | 36 | 462 | $113.47 | 15 |
| Jardiance | Empagliflozin | 36 | 2,400 | $47,571.73 | 18 |
| Atorvastatin Calcium | Atorvastatin Calcium | 30 | 2,220 | $607.10 | 14 |
| Insulin Glargine-Yfgn | Insulin Glargine-Yfgn | 30 | 1,522 | $3,325.43 | 13 |
| Gabapentin | Gabapentin | 27 | 1,034 | $346.79 | 12 |
| Shingrix | Varicella-Zoster Ge/As01b/Pf | 21 | 21 | $4,290.81 | 16 |
| Lactulose | Lactulose | 19 | 385 | $225.93 | โ |
| Losartan Potassium | Losartan Potassium | 18 | 840 | $378.70 | โ |
| Metformin Hcl | Metformin Hcl | 18 | 1,500 | $174.04 | โ |
| Tamsulosin Hcl | Tamsulosin Hcl | 15 | 870 | $368.57 | โ |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 15 | 510 | $443.19 | โ |
| Mounjaro | Tirzepatide | 15 | 420 | $17,055.33 | โ |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 14 | 250 | $237.03 | โ |
| Sertraline Hcl | Sertraline Hcl | 14 | 1,260 | $34.69 | โ |
| Clobetasol Propionate | Clobetasol Propionate | 14 | 402 | $393.61 | โ |
| Lidocaine | Lidocaine | 14 | 420 | $1,108.08 | โ |
| Trulicity | Dulaglutide | 14 | 392 | $13,113.31 | โ |
| Synthroid | Levothyroxine Sodium | 13 | 1,170 | $1,865.69 | โ |
| Novolin 70-30 | Insulin Nph Hum/Reg Insulin Hm | 13 | 780 | $1,480.80 | โ |
| Indomethacin | Indomethacin | 12 | 328 | $141.36 | โ |
(top 25 shown)
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
Self-certified to NPPES: 2026-10-05NUCC Taxonomy Code: 207R00000X
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSSources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Radiology - Diagnostic Radiology
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Doctor of Dental Medicine
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)
Hospitalist
Doctor of Medicine (M.D.)
Internal Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 3900 WOODLAND AVE, PHILADELPHIA, PA 191044551 (Tel: 2158234060)
Registered at 3900 WOODLAND AVE, PHILADELPHIA, PA 191044551 (Tel: 2158234060)
Internal Medicine (license number reported to NPPES: NM MD2020-1150)
Registered at 516 E NIZHONI BLVD, GALLUP, NM 873015748 (Tel: 5057221000)
Registered at 516 E NIZHONI BLVD, GALLUP, NM 873015748 (Tel: 5057221000)
Internal Medicine (license number reported to NPPES: MA 273653)
NPI status registered as active in NPPES database
Registered at 75 FRANCIS ST, BOSTON, MA 021156110 (Tel: 6177325775)
Registered at 75 FRANCIS ST, BOSTON, MA 021156110
Recorded as HALEY THUN, M.D.
Emergency Medicine (license number reported to NPPES: MA 263455)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Internal Medicine Providers in Philadelphia
- Anmol Patel, M, D
- Dr. Rhea Powell, MD
- Dr. Bruce Kinosian, MD
- Dr. Sabiha Toni, MD
- Remy Arwani
- Dr. Victor Solon, MD
Mailing Address
3900 Woodland Ave
Philadelphia, PA 191044551
Phone: 2158234060