DR. SEAN THOMAS GUNNING M.D.
NPI 1538220504
Dermatology in Pikesville, MD

Q: What is Sean Gunning's NPI number?

The NPI number for Sean Gunning is 1538220504. It was assigned to this individual provider in the NPPES registry on December 13, 2006.

Q: What is Sean Gunning's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Q: When was this NPI record last updated?

The NPPES record for Sean Gunning was last updated on November 30, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 13, 2006PECOS EnrolledAccepts Medicare Assignment

78.52/100

CMS Quality Rating

1838 GREENE TREE RD, STE 121, PIKESVILLE, MD 21208(410) 486-3990 Get Directions Write a Review

NPPES record last updated: November 30, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 30, 2020, Jul 22, 2019 (2 updates tracked since 2019).

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About Dr. Sean Thomas Gunning M.d. NPPES

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

DR. SEAN THOMAS GUNNING M.D. (NPI 1538220504) is an individual dermatology provider in Pikesville, Maryland, licensed in Maryland (D0062385) and active in the NPI registry since December 2006. He is enrolled in Medicare PECOS and is a graduate of New York University School Of Medicine (1999).

NPPES Registry Identity

NPI1538220504

Entity TypeIndividualMale

Primary Taxonomy207N00000X

Provider Legal NameDR. SEAN THOMAS GUNNINGCredential: M.D.

Location Address1838 GREENE TREE RD, STE 121Pikesville, MD 21208-6391

Mailing Address1838 Greene Tree Rd Ste 121Pikesville, MD 21208-7108 · (410) 494-1355 · Fax (410) 494-1361

Phone(410) 486-3990

Sole ProprietorNo

Medical School CMSNew York University School Of MedicineGraduated 1999

Enumeration DateDecember 13, 2006

Last NPPES UpdateNovember 30, 20202 updates tracked since enumeration

NPPES CertifiedNovember 30, 2020

✔ NPI 1538220504 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians

Taxonomy Code207N00000X

License✔ Licensed in MD · D0062385

Definition

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

1838 GREENE TREE RD, Pikesville, MD 21208

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Sean Thomas Gunning 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 ID8123108701

PECOS Enrollment IDI20091013000125

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.

Medicare Billing Reassignment

Medicare enrollment records show Sean Gunning reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Clinical Associates P A

7.5 mi

Multi-Specialty

515 FAIRMOUNT AVE STE 300
Towson, MD 21286

Reassigned Medicare billing, Maryland enrollment
39 clinicians in this Medicare group

NPI 1871973628 (410) 296-5300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 27

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.

Destruction of precancer skin growth, 2-14 growths 17003

This procedure involves removing 2-14 precancerous skin growths. The growths are treated to prevent them from potentially developing into skin cancer. The process is safe, with minimal discomfort, and promotes healthier skin.

2,435 services372 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.

1,323 services932 patients

Destruction of precancer skin growth, 1 growth 17000

"Destruction of precancer skin growth" is a procedure that eliminates a single precancerous skin growth. This is done to prevent it from developing into skin cancer. The growth may be removed using various methods such as cryotherapy (freezing), laser therapy, or topical medications.

719 services466 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

562 services417 patients

Biopsy of related skin growth, first growth 11102

A biopsy of a skin growth involves taking a small sample of the growth to examine it under a microscope. This helps determine if the growth is harmful. The procedure is typically quick, with minimal discomfort. It's a crucial step in ensuring your skin's health.

503 services406 patients

Application of ultraviolet light to skin 96900

Application of ultraviolet light to skin is a treatment process where a special type of light is directed onto the skin. It's often used to treat certain skin conditions, like psoriasis or vitiligo. It's a safe, controlled procedure performed by a healthcare professional.

450 services14 patients

Destruction of skin growth, 1-14 growths 17110

"Destruction of skin growth" refers to a procedure where 1-14 abnormal skin growths are removed. This is done using methods such as freezing, burning, or laser therapy. It helps prevent the growth from causing discomfort or turning into a more serious condition.

384 services278 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

183 services183 patients

Biopsy of related skin growth, each additional growth 11103

A biopsy of related skin growth is a procedure where a small piece of skin growth is removed for testing. If additional growths are identified, they may also be biopsied. This helps in diagnosing skin conditions and planning appropriate treatment.

135 services91 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 services108 patients

Therapy procedure using ultraviolet radiation with tar or petroleum jelly application 96910

This therapy involves applying tar or petroleum jelly on the skin, followed by exposure to ultraviolet radiation. It helps in treating skin conditions by slowing cell growth and reducing inflammation. It's a safe, controlled process, often used for conditions like psoriasis.

121 services11 patients

New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202

This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.

76 services76 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

70 services12 patients

Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm 12032

This procedure involves the repair of a wound between 2.6-7.5 cm located on the scalp, underarms, trunk, arms, or legs. The process includes cleaning, debridement (removal of damaged tissue), and suturing (stitching) of the wound to promote healing.

64 services59 patients

Destruction of precancer skin growth, 15 or more growths 17004

This procedure involves removing 15 or more precancerous skin growths to prevent them from developing into cancer. It's done using various methods like freezing, creams, or minor surgery. The goal is to protect your health by stopping cancer before it starts.

56 services42 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.

45 services45 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.

35 services20 patients

Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm 11602

This procedure involves the surgical removal of a cancerous skin growth on the body, arms, or legs. The growth is between 1.1 and 2.0 cm in size. The goal is to eliminate cancer cells and prevent them from spreading to other parts of the body.

31 services27 patients

Injection into skin growth, 1-7 growths 11900

This procedure involves injecting medication into 1-7 skin growths. The medication helps to reduce the size of the growths or completely eliminate them. It's a simple, quick, and usually painless process performed by a medical professional.

30 services20 patients

Simple or single drainage of skin abscess 10060

A simple or single drainage of skin abscess is a procedure to remove pus from a skin infection. A small cut is made on the abscess, the pus is drained out, and the area is cleaned. This helps to reduce pain, speed up recovery, and prevent the spread of infection.

23 services23 patients

Destruction of cancer skin growth of trunk, arms, or legs, 1.1-2.0 cm 17262

This procedure involves removing a cancerous skin growth on the trunk, arms, or legs that is between 1.1 and 2.0 cm in size. The growth is destroyed using methods like surgery, laser, or freezing, aiming to eliminate cancer and prevent its spread.

18 services13 patients

Removal of skin tag, 1-15 skin tags 11200

Skin tag removal is a simple procedure where small, benign growths on the skin are carefully removed. This can be achieved through several methods such as freezing, burning, or cutting off the skin tags. The process is quick, typically painless with local anesthesia, and aids in skin smoothness.

17 services17 patients

Removal of cancer skin growth of body, arms, or legs, 0.6-1.0 cm 11601

This procedure involves the surgical removal of a cancerous skin growth that measures between 0.6-1.0 cm, found on the body, arms, or legs. The goal is to eliminate cancer cells to prevent further spread. It's a common, safe, and effective treatment.

17 services15 patients

Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm 11603

This procedure involves the removal of a cancerous skin growth, between 2.1 and 3.0 cm, from the body, arms, or legs. The area is numbed, then the growth is carefully cut out. The goal is to eliminate all cancer cells while minimizing scarring.

15 services13 patients

Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less 12031

This procedure involves the repair of a wound that is located on the scalp, underarms, trunk, arms, or legs and is 2.5 cm or less in size. The repair is intermediate, meaning it's more complex than a simple closure, but not as extensive as a complex repair.

15 services15 patients

Punch biopsy, first skin growth 11104

A punch biopsy is a procedure where a small, circular tool is used to remove a sample of skin tissue. This is usually done to test a skin growth for potential issues. You may feel a pinch, but discomfort is minimal. The area heals quickly.

12 services12 patients

Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm 11402

This procedure involves the removal of a noncancerous skin growth on the body, arms, or legs that is between 1.1 and 2.0 cm in size. It's a safe and routine procedure performed by a medical professional to improve your skin health and appearance.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21208 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

$94.08 typical visit price

range $60.73 – $183.44

Typical copayment $23.52 (range $15.18 – $45.86)

Most-billed visit code 99203

Established Patient

$75.47 typical visit price

range $19.60 – $149.17

Typical copayment $18.86 (range $4.90 – $37.29)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

78.52/100

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

Scored as part of a group practice

Quality

80.36

Promoting Interoperability

Improvement Activities

Cost

64.73

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.

EDWARD ZIMMERMAN M.D.

Internal Medicine (Gastroenterology)

1838 GREENE TREE RD, STE 400
BALTIMORE, MD 21208

Baltimore County (410) 602-7782

KEN M ZONIES MD LLC

Internal Medicine

1838 GREENE TREE RD, STE 300
PIKESVILLE, MD 21208

Baltimore County (410) 653-0366

DR. NORBERT ZEMANKIEWICZ D.O.

Surgery

1838 GREENE TREE RD, SUITE 285
PIKESVILLE, MD 21208

Baltimore County (410) 602-0777

SHOSHANA COHEN O.D.

Optometrist

1838 GREENE TREE RD, SUITE 225
BALTIMORE, MD 21208

Baltimore County (410) 653-0200

MILAN WISTER M.D.

Internal Medicine

1838 GREENE TREE RD, SUITE 535
PIKESVILLE, MD 21208

Baltimore County (443) 438-4925

OROSZLAN LLC

Internal Medicine

1838 GREENE TREE RD, STE 300
PIKESVILLE, MD 21208

Baltimore County (410) 653-0366

CENTER FOR PAIN MANAGEMENT, LLC

Pain Medicine (Interventional Pain Medicine)

1838 GREENE TREE RD, SUITE 150
PIKESVILLE, MD 21208

Baltimore County (410) 383-7443

LIFEBRIDGE COMMUNITY GASTROENTEROLOGY, LLC

Internal Medicine (Gastroenterology)

1838 GREENE TREE RD, SUITE 400
PIKESVILLE, MD 21208

Baltimore County (410) 602-7782

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 Sean Gunning's NPI number?

The NPI number for Sean Gunning is 1538220504. It was assigned to this individual provider in the NPPES registry on December 13, 2006.

Where is Sean Gunning located?

Sean Gunning practices at 1838 Greene Tree Rd Ste 121, Pikesville, MD 21208. The listed phone number is (410) 486-3990.

What is Sean Gunning's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Sean Gunning enrolled in Medicare?

Yes. Sean Gunning 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.

Which organization bills Medicare for Sean Gunning's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sean Gunning reassigns Medicare benefits to Clinical Associates P A (Towson, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sean Gunning's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sean Gunning was last updated on November 30, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.