DR. MARK M THEISS M.D.
NPI 1669534350
Orthopaedic Surgery - Sports Medicine in Falls Church, VA

Q: What is Mark Theiss's NPI number?

The NPI number for Mark Theiss is 1669534350. It was assigned to this individual provider in the NPPES registry on December 16, 2006.

Q: What is Mark Theiss's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Sports Medicine, with taxonomy code 207XX0005X.

Q: When was this NPI record last updated?

The NPPES record for Mark Theiss was last updated on January 29, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since December 16, 2006PECOS EnrolledAccepts Medicare Assignment

81.28/100

CMS Quality Rating

3300 GALLOWS RD, FALLS CHURCH, VA 22042(703) 776-4001(703) 776-7113 Get Directions Write a Review

NPPES record last updated: January 29, 2022. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 29, 2022, Oct 20, 2020 (2 updates tracked since 2020).

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About Dr. Mark M Theiss M.d. NPPES

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

DR. MARK M THEISS M.D. (NPI 1669534350) is an individual sports medicine provider in Falls Church, Virginia, licensed in Virginia (0101036798) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS, is affiliated with Inova Alexandria Hospital, and is a graduate of Georgetown University School Of Medicine (1975).

NPPES Registry Identity

NPI1669534350

Entity TypeIndividualMale

Primary Taxonomy207XX0005X

Provider Legal NameDR. MARK M THEISSCredential: M.D.

Location Address3300 GALLOWS RDFalls Church, VA 22042-3300

Mailing AddressPo Box 37174Baltimore, MD 21297-3174 · (571) 423-5699 · Fax (571) 423-5698

Phone(703) 776-4001

Fax(703) 776-7113

Sole ProprietorNo

Medical School CMSGeorgetown University School Of MedicineGraduated 1975

Enumeration DateDecember 16, 2006

Last NPPES UpdateJanuary 29, 20222 updates tracked since enumeration

NPPES CertifiedJanuary 29, 2022

✔ NPI 1669534350 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOrthopaedic Surgery · Sports MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207XX0005X

License✔ Licensed in VA · 0101036798

Definition

An orthopaedic surgeon trained in sports medicine provides appropriate care for all structures of the musculoskeletal system directly affected by participation in sporting activity. This specialist is proficient in areas including conditioning, training and fitness, athletic performance and the impact of dietary supplements, pharmaceuticals, and nutrition on performance and health, coordination of care within the team setting utilizing other health care professionals, field evaluation and management, soft tissue biomechanics and injury healing and repair. Knowledge and understanding of the principles and techniques of rehabilitation, athletic equipment and orthotic devices enables the specialist to prevent and manage athletic injuries.

Also ListedOrthopaedic SurgeryTaxonomy 207X00000X · License 0101036798 (VA)

3300 GALLOWS RD, Falls Church, VA 22042

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Other Identifiers 1

Medicaid006499317VA

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 M Theiss 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 ID5395883698

PECOS Enrollment IDI20140617002262

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.

Areas of Expertise CMS Part B claims 15

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.

Hyaluronan or derivitive, genvisc 850, for intra-articular injection, 1 mg J7320

Genvisc 850 is an injection containing hyaluronan, a substance naturally found in your joints. It helps to lubricate and cushion your joints. This treatment is used to relieve knee pain due to osteoarthritis when other treatments have not worked.

1,977 services16 patients

Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg J0702

This injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.

460 services112 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

216 services131 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.

216 services149 patients

X-ray of knee, 4 or more views 73564

An X-ray of the knee, 4 or more views, is a non-invasive imaging test. It involves capturing multiple images of your knee from different angles. This helps in diagnosing conditions such as fractures, arthritis, or infections. The procedure is quick and painless.

154 services151 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

110 services110 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

92 services75 patients

Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301

Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.

91 services15 patients

X-ray of hip, 2-3 views 73502

An X-ray of the hip with 2-3 views is a non-invasive imaging test. It uses a small amount of radiation to produce pictures of the hip joint. These images help in diagnosing conditions like fractures, arthritis, or other abnormalities. The process is quick and painless.

73 services57 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

53 services53 patients

X-ray of hip, 1 view 73501

An X-ray of the hip, 1 view, is a quick, painless test where a small amount of radiation is used to produce images of the hip joint. This helps in diagnosing conditions like arthritis or fractures. You'll be positioned so that the X-ray machine can capture the best image of your hip.

36 services22 patients

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.

25 services25 patients

X-ray of knee, 3 views 73562

An X-ray of the knee, 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the knee from three different angles. This helps medical professionals to diagnose and monitor conditions like arthritis, fractures, or infections. The process is quick and painless.

19 services17 patients

Replacement of thigh bone and hip joint with prosthesis 27130

This procedure, known as hip arthroplasty, involves replacing your damaged thigh bone and hip joint with artificial parts, called a prosthesis. It helps relieve pain, improve mobility, and enhance your quality of life.

18 services16 patients

Replacement of knee joint, both sides of knee 27447

A bilateral knee joint replacement is a procedure where the damaged parts of both your knee joints are replaced with artificial parts. It aims to relieve pain and improve mobility. The process involves a surgical operation under anesthesia.

13 services12 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Inova Alexandria Hospital

Acute Care Hospitals · Alexandria, VA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490040

Location4320 Seminary RdAlexandria, VA 22304 · Alexandria City County

Emergency services Birthing friendly

Inova Fair Oaks Hospital

Acute Care Hospitals · Fairfax, VA

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number490101

Location3600 Joseph Siewick DriveFairfax, VA 22033 · Fairfax County

Birthing friendly

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.28/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

70.77

Promoting Interoperability

100

Improvement Activities

Cost

66.84

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.

Walker, folding, wheeled, adjustable or fixed height E0143

DME-Other DME · category DE000N

2 suppliers14 claims14 services$37.02 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 20

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

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