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Dr. Mark W Ptaskiewicz , MD

Internal Medicine • Westminster, CO

Active NPI 1043347099 Individual Practitioner Male Practitioner
Practice location in NPPES

7701 Sheridan Blvd
Westminster, CO 800032605

Call 3033384545 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

7701 Sheridan Blvd

Westminster, CO 800032605

Telephone 3033384545
Organization at the Same NPPES Address or Phone
Kaiser Foundation Health Plan Of Co Facility NPI 1366556086

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Jefferson Medical College Of Thomas Jefferson University

Graduation Year

1991

Medicare-allowed amount

About $9,006 in 2021

The total amount Medicare approved for these services in 2021. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

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, 2021.

Paid by Medicare

About $9,006 in 2021

The part of the Medicare-allowed amount that Medicare itself paid in 2021, after patients' deductibles and coinsurance.

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, 2021.

30-day fills

32,739 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

$674,682 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

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)

No Open Payments records are listed for this clinician for 2019–2025.

Guide: How to read an Open Payments record

Years since graduation

35 years (graduated 1991)

CMS Doctors and Clinicians data list 1991 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

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.

May accept Medicare assignment

CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.

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?”

Guide: What Medicare assignment means

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.

Guide: How Medicare covers telehealth

Can order Medicare-covered services

CMS lists Dr. Ptaskiewicz as eligible to order or refer durable medical equipment (DME) for people with Medicare.

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.

Guide: What ordering and referring status means

Compared with the same specialty in Westminster and Colorado

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

More Part D prescriptions than 85% of clinicians listed under Internal Medicine in Westminster, CO (2024, 24 clinicians with data). Median for this group: 4,248. Middle half: 1,870 to 10,775.

More Part D prescriptions than 95% of clinicians listed under Internal Medicine in Colorado (2024, 1,068 clinicians with data). Median for this group: 1,260. Middle half: 102 to 4,471.

Part D drug cost

A higher Part D drug cost than 95% of clinicians listed under Internal Medicine in Westminster, CO (2024, 24 clinicians with data). Median for this group: $242,945. Middle half: $71,676 to $483,556.

A higher Part D drug cost than 90% of clinicians listed under Internal Medicine in Colorado (2024, 1,068 clinicians with data). Median for this group: $102,658. Middle half: $5,184 to $333,265.

Medicare Part B

Comparisons use 2024 data. The latest CMS data for Dr. Ptaskiewicz are from 2021.

42 active clinicians are listed under Internal Medicine with a practice address in Westminster, CO (2,048 in Colorado).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Westminster

14.3% of these 42 clinicians have the CMS telehealth indicator.

52.4% of these 42 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2021), CMS Medicare Part D Prescribers (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2021.

CMS Part B · Data Year 2021

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2020 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, 2021; 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
0031A Adm sarscov2 vac ad26 .5ml
239 239 $28.95 $28.83
0001A Intramuscular administration of single severe acute respiratory syndrome coronavirus 2 (covid-19) vaccine, mrna-lnp, spike protein, preservative free, 30 mcg/0.3ml dosage, diluent reconstituted; first dose
29 29 $41.18 $41.18
0064A Adm sarscov2 50mcg/0.25mlbst
16 16 $41.18 $41.18
0011A Adm sarscov2 100mcg/0.5ml1st
15 15 $19.27 $17.53

Source: CMS Part B by Provider and Service, 2021; 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.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 1,011 88,944 $11,914.66 287
Lisinopril Lisinopril 610 54,330 $6,775.18 190
Rosuvastatin Calcium Rosuvastatin Calcium 497 44,456 $5,402.54 166
Levothyroxine Sodium Levothyroxine Sodium 469 41,741 $8,293.70 136
Tamsulosin Hcl Tamsulosin Hcl 427 36,640 $7,680.44 139
Omeprazole Omeprazole 419 36,349 $5,015.86 149
Losartan Potassium Losartan Potassium 343 30,301 $3,838.65 106
Gabapentin Gabapentin 332 28,685 $8,586.02 116
Amlodipine Besylate Amlodipine Besylate 319 27,661 $3,532.36 101
Metformin Hcl Metformin Hcl 301 26,050 $3,564.85 96
Duloxetine Hcl Duloxetine Hcl 295 25,658 $6,898.44 117
Furosemide Furosemide 289 24,742 $3,991.18 104
Albuterol Sulfate Hfa Albuterol Sulfate 264 10,447 $7,740.71 119
Metoprolol Succinate Metoprolol Succinate 237 20,836 $3,022.49 76
Pradaxa Dabigatran Etexilate Mesylate 226 17,610 $58,806.72 70
Pantoprazole Sodium Pantoprazole Sodium 189 15,770 $2,850.51 62
Oxycodone Hcl Oxycodone Hcl 189 4,753 $3,534.78 35
Potassium Chloride Potassium Chloride 178 15,565 $7,263.07 60
Allopurinol Allopurinol 176 15,840 $2,207.54 50
Simvastatin Simvastatin 174 14,580 $1,879.47 51
Finasteride Finasteride 161 13,830 $2,485.09 47
Spiriva Respimat Tiotropium Bromide 161 10,626 $105,477.34 54
Wixela Inhub Fluticasone Propion/Salmeterol 156 11,970 $39,854.56 58
Arexvy Rsvpref3 Antigen/As01e/Pf 156 156 $22,932.00 156
Prednisone Prednisone 146 1,570 $1,106.41 112

(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: 2021-04-02
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES CO 36000

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.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Colorado Division of Professions and Occupations.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
01360007 (CO)
Other Identifier Kaiser-Commercial Number
009595

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Not Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Not Eligible
Power Mobility Devices (PMD) Eligible

Sources: 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.

26 listed
Dr. Robert Burman , MD, PhD

Radiology - Diagnostic Radiology

NPI 1003013830

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Dr. Michelle Chen , MD

Internal Medicine

NPI 1003375908

Doctor of Medicine (M.D.)

Suzanne Ehler , FNP

Nurse Practitioner - Family

NPI 1003205295

Family Nurse Practitioner

Dr. Barry Eskins , MD

Internal Medicine - Hospice and Palliative Medicine

NPI 1013035971

Doctor of Medicine (M.D.)

Kristy Faulkner , NP

Nurse Practitioner - Family

NPI 1003177247

Nurse Practitioner

Sara Flanigan

Physician Assistant - Medical

NPI 1003171612

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

7 Historical Events
📍
Updated Business Mailing Address April 02, 2021

Registered at 10350 E DAKOTA AVE, DENVER, CO 802471314 (Tel: 3033383382)

✅
NPI Profile Active March 01, 2011

NPI status registered as active in NPPES database

📍
Practice Location (Initial Record) March 01, 2011

Registered at 7701 SHERIDAN BLVD, WESTMINSTER, CO 800032605 (Tel: 3033384545)

📍
Business Mailing Address (Initial Record) March 01, 2011

Registered at 7701 SHERIDAN BLVD, WESTMINSTER, CO 800032605 (Tel: 3033384545)

👤
Provider Name / Credentials (Initial Record) March 01, 2011

Recorded as MARK PTASKIEWICZ, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 01, 2011

Internal Medicine (license number reported to NPPES: CO 36000)

🟢
Initial NPI Registration & Enumeration February 27, 2007

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1043347099
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 27, 2007
Last Update: April 02, 2021
Sole Proprietor: No

Other Internal Medicine Providers in Westminster

All Internal Medicine Providers in Westminster

More public profiles in Colorado

Directory navigation, in NPI number order.

Mailing Address

10350 E Dakota Ave

Denver, CO 802471314

Phone: 3033383382

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.