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DR. MARK DARYL TIEMAN M.D.
NPI 1154494003
Internal Medicine in Commack, NY

Active since November 16, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 33D1043819 · Waiver
356 VETERANS MEMORIAL HWY, COMMACK, NY 11725(631) 858-0400(631) 543-2785 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Mark Daryl Tieman M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK DARYL TIEMAN M.D. (NPI 1154494003) is an individual internal medicine provider in Commack, New York, licensed in New York (179172) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through August 2, 2027, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (1986).

NPPES Registry Identity

NPI1154494003
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARK DARYL TIEMANCredential: M.D.
Location Address356 VETERANS MEMORIAL HWYCommack, NY 11725-4332
Mailing Address34 Copperdale LnHuntington, NY 11743-2523 · (631) 858-0400 · Fax (631) 543-2785
Phone(631) 858-0400
Fax(631) 543-2785
Sole ProprietorNo
Medical School CMSAlbert Einstein College Of Medicine Of Yeshiva UniversityGraduated 1986
Enumeration DateNovember 16, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1154494003 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 179172
Definition
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.
356 VETERANS MEMORIAL HWY, Commack, NY 11725
Open in Google Maps ↗

Other Identifiers 3

Medicare ID-Type Unspecified48F341NY
Other179172NY · M.d. License Number
Medicare UPINE48824NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark Daryl Tieman M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5991970139
PECOS Enrollment IDI20111216000002
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 33D1043819

Mark Tieman MD · Commack, NY
Active · expires Aug 2, 2027
CLIA Number33D1043819
Laboratory TypePhysician Office
Certificate Effective DateAugust 3, 2025
Certificate Expiration DateAugust 2, 2027
Laboratory DirectorMark Tieman MD
Laboratory Phone(631) 858-0400
Laboratory LocationMark Tieman MD356 Veterans Memorial Highway, Commack, NY 11725
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
175 services38 patients
Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
131 services34 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
122 services38 patients
Telephone medical discussion with physician, 11-20 minutes 99442
This is a service where you have a phone conversation with your doctor for 11-20 minutes. It's used for discussing health concerns, reviewing test results, or managing ongoing conditions. It's a convenient way to receive medical advice without an in-person visit.
114 services36 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11725 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
1 supplier12 claims12 services$200.12 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CINDY DEMETRIOU
Nurse Practitioner (Adult Health)
356 VETERANS MEMORIAL HWY, SUITE 5
COMMACK, NY 11725
Suffolk County (631) 858-0400
DR. KAREN L DEFALCO PSY.D.
Psychologist
356 VETERANS MEMORIAL HWY
COMMACK, NY 11725
Suffolk County (516) 316-0486
DR. LINDA RACHEL JONAS PHD
Psychologist
356 VETERANS MEMORIAL HWY, SUITE 6
COMMACK, NY 11725
Suffolk County (631) 543-2889
DR. BARBARA ANNE HERD PH.D.
Psychologist (Clinical)
356 VETERANS MEMORIAL HWY
COMMACK, NY 11725
Suffolk County (631) 689-5342
DR. MARSHA ALEXANDER D.O
Psychiatry & Neurology (Child & Adolescent Psychiatry)
356 VETERANS MEMORIAL HWY, SUITE NUMBER 6
COMMACK, NY 11725
Suffolk County (516) 779-3300
DR. RACHNA SHARMA SONDHI M.D.
Psychiatry & Neurology (Child & Adolescent Psychiatry)
356 VETERANS MEMORIAL HWY, SUITE # 6
COMMACK, NY 11725
Suffolk County (516) 639-7219
FREEDOMCARE PHYSICIAN PRACTICE PC
Internal Medicine
356 VETERANS MEMORIAL HWY
COMMACK, NY 11725
Suffolk County (646) 224-7300
DR. BARBARA EDELL FISHER PH.D.
Psychologist (Clinical)
356 VETERANS MEMORIAL HWY
COMMACK, NY 11725
Suffolk County (631) 864-0880

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Tieman's NPI number?

The NPI number for Mark Tieman is 1154494003. It was assigned to this individual provider in the NPPES registry on November 16, 2006.

Where is Mark Tieman located?

Mark Tieman practices at 356 Veterans Memorial Hwy, Commack, NY 11725. The listed phone number is (631) 858-0400.

What is Mark Tieman's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Mark Tieman enrolled in Medicare?

Yes. Mark Tieman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does Mark Tieman hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 33D1043819) is associated with this NPI, valid through August 2, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Mark Tieman was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.