DR. JOHN MICHAEL WILLIAMS MD
NPI 1457389678
Dermatology in Summit, NJ

Q: What is John Williams's NPI number?

The NPI number for John Williams is 1457389678. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Q: What is John Williams'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 John Williams was last updated on January 2, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 June 28, 2006PECOS EnrolledAccepts Medicare Assignment

75/100

CMS Quality Rating

33 OVERLOOK RD STE 202, SUMMIT, NJ 07901(908) 598-1300(908) 598-1301 Get Directions Write a Review

NPPES record last updated: January 2, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. John Michael Williams Md NPPES

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

DR. JOHN MICHAEL WILLIAMS MD (NPI 1457389678) is an individual dermatology provider in Summit, New Jersey, licensed in New Jersey (25MA08118400) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Morristown Medical Center, and is a graduate of Drexel University College Of Medicine (1999).

NPPES Registry Identity

NPI1457389678

Entity TypeIndividualMale

Primary Taxonomy207N00000X

Provider Legal NameDR. JOHN MICHAEL WILLIAMSCredential: MD

Location Address33 OVERLOOK RD STE 202Summit, NJ 07901-3562

Mailing Address33 Overlook Rd Ste 202Summit, NJ 07901-3562 · (908) 598-1300 · Fax (908) 598-1301

Phone(908) 598-1300

Fax(908) 598-1301

Sole ProprietorYes

Medical School CMSDrexel University College Of MedicineGraduated 1999

Enumeration DateJune 28, 2006

Last NPPES UpdateJanuary 2, 2019

✔ NPI 1457389678 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians

Taxonomy Code207N00000X

License✔ Licensed in NJ · 25MA08118400

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.

33 OVERLOOK RD STE 202, Summit, NJ 07901

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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. John Michael Williams Md 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 ID3870565435

PECOS Enrollment IDI20080327000062

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 John Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Skin Care And Surgery Center LLC

Same address

Medical Specialty

33 OVERLOOK RD STE 202
Summit, NJ 07901

Reassigned Medicare billing, New Jersey enrollment
2 clinicians in this Medicare group

NPI 1851562193 (908) 598-1300

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 44

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.

877 services165 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.

604 services409 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.

465 services296 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.

372 services281 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.

266 services171 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.

266 services212 patients

Removal of noncancer skin growth of body, arms, or legs, 0.6-1.0 cm 11401

This procedure involves the removal of a noncancerous skin growth on your body, arms, or legs. The growth is between 0.6-1.0 cm in size. It's typically a simple process where the growth is cut away and the area is then stitched up for healing.

147 services111 patients

Shaving of skin growth of body, arms, or legs, 1.1-2.0 cm 11302

This procedure involves the careful removal of a skin growth on your body, arms, or legs. The growth is between 1.1 and 2.0 cm. A special tool is used to shave off the growth, which is a quick and relatively painless process.

143 services108 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.

137 services52 patients

Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm 11301

This procedure involves the careful removal of a small skin growth on the body, arms, or legs. It's done by shaving off the growth that's 0.6-1.0 cm in size. It's a common, safe method to treat non-cancerous skin growths and improve skin appearance.

108 services75 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.

89 services59 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.

75 services14 patients

Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm 11441

This procedure involves the removal of a noncancerous skin growth on areas of the face such as the nose, lips, mouth, ears, or eyelids. The growth size is between 0.6-1.0 cm. The goal is to improve comfort, function, or appearance.

62 services56 patients

Removal of noncancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm 11422

This procedure involves the removal of a noncancerous skin growth in areas such as the scalp, neck, hands, or feet. The growth being removed is between 1.1 to 2.0 cm in size. The process is safe, typically involves local anesthesia, and is performed by a healthcare professional.

59 services51 patients

Injection into skin growth, more than 7 growths 11901

This procedure involves injecting medication into multiple skin growths (more than 7) to either shrink them or eliminate them. It's a safe, minimally invasive method often used for benign growths. Comfort during the process is ensured.

53 services27 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.

53 services38 patients

Complicated or multiple drainage of skin abscess 10061

This procedure involves draining one or more skin abscesses, which are pockets of pus that form due to an infection. The process includes making a small cut on the abscess, removing the pus, and cleaning the area to promote healing and prevent further infection.

52 services47 patients

All potassium hydroxide (koh) preparations Q0112

Potassium hydroxide (KOH) preparations are used in medical testing to identify fungal infections. In this procedure, a sample (like skin, hair, or nail) is collected and treated with KOH solution. This destroys non-fungal cells, making it easier to spot fungi under a microscope.

47 services43 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.

44 services43 patients

Removal of skin and tissue, 20.0 sq cm or less 11042

This procedure involves the surgical removal of skin and tissue, up to 20.0 square cm in size. It's often performed to treat conditions like skin cancer or to remove moles, warts, and other skin lesions. The area is numbed and the unwanted tissue is carefully cut out.

41 services11 patients

Removal of noncancer skin growth of scalp, neck, hands, feet, or genitals, 0.6-1.0 cm 11421

This procedure involves the removal of a noncancerous skin growth on areas like the scalp, neck, hands, or feet. The size of the growth is between 0.6-1.0 cm. The process is performed by a medical professional and helps maintain skin health.

41 services39 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

41 services32 patients

Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm 11442

This procedure involves the removal of a noncancerous skin growth on your face, ears, eyelids, nose, lips, or mouth that measures between 1.1-2.0 cm. It's a safe process to enhance your comfort and appearance.

40 services33 patients

Simple separation of fingernail or toenail from nail bed, first nail 11730

This procedure involves the gentle removal of the first nail from its bed, often due to injury or infection. It's performed under local anesthesia to minimize discomfort. The nail will gradually regrow over time.

37 services30 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.

35 services28 patients

Destruction of skin growth, 15 or more growths 17111

"Destruction of skin growth" refers to a procedure where unwanted skin growths, such as warts or moles, are removed. In this case, 15 or more growths are treated. Techniques may include freezing, burning, or laser therapy. It's a safe, quick process to improve skin health.

35 services32 patients

Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm 11642

This procedure involves the surgical removal of a cancerous skin growth on the face, ears, eyelids, nose, lips, or mouth. The growth is between 1.1-2.0 cm in size. This is done to prevent the cancer from spreading and to restore health.

32 services23 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.

31 services30 patients

Removal of cancer skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm 11622

This procedure involves the careful removal of a cancerous skin growth measuring between 1.1 to 2.0 cm, located on the scalp, neck, hands, or feet. The goal is to eliminate the cancer and prevent its spread. This is done under local anesthesia to minimize discomfort.

30 services23 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.

28 services27 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.

26 services26 patients

Removal of noncancer thickened skin growth, 2-4 growths 11056

This procedure involves the safe removal of 2-4 noncancerous thickened skin growths. It's typically done under local anesthesia. The process helps to alleviate discomfort and prevent potential complications. It's a standard, low-risk procedure.

24 services21 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm 11311

This procedure involves removing a small skin growth on the face or related areas like the ears, eyelids, nose, lips, or mouth. The growth is gently shaved off, typically under local anesthesia. It's a quick, safe process for growths between 0.6-1.0 cm in size.

22 services19 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.

21 services21 patients

Removal of cancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.6-1.0 cm 11641

This procedure involves the careful removal of a small cancerous growth on the face, ears, eyelids, nose, lips, or mouth. It's a precise operation performed by a specialist to ensure complete removal of the cancer while preserving healthy tissue.

20 services16 patients

Shaving of skin growth of body, arms, or legs, more than 2.0 cm 11303

This procedure involves the removal of a skin growth on your body, arms, or legs that is over 2.0 cm. A special tool is used to shave off the growth, often under local anesthesia. It's a routine, safe process to maintain skin health.

19 services15 patients

Shaving of skin growth of face, ears, eyelids, nose, lips, or mouth, 1.1-2.0 cm 11312

This procedure involves the careful removal of a skin growth on the face, ears, eyelids, nose, lips, or mouth. The growth being treated is between 1.1 and 2.0 cm in size. The process is typically quick, with minimal discomfort, and aids in maintaining skin health.

19 services17 patients

Simple separation of fingernail or toenail from nail bed, each additional nail 11732

This procedure involves the careful removal of a fingernail or toenail from its nail bed. It's commonly done to treat conditions like an ingrown nail or fungal infection. Additional nails can also be removed if necessary. The process is typically painless due to local anesthesia.

19 services16 patients

Shaving of skin growth of scalp, neck, hands, feet, or genitals, 1.1-2.0 cm 11307

This procedure involves the careful removal of a skin growth between 1.1 to 2.0 cm in size. The growth could be located on the scalp, neck, hands, or feet. The process is done using a sharp instrument to shave off the growth, promoting healthier skin.

18 services14 patients

Removal of noncancer skin growth of body, arms, or legs, 2.1-3.0 cm 11403

This is a procedure where a noncancerous skin growth, sized 2.1-3.0 cm, on the body, arms, or legs is removed. It's typically done under local anesthesia. The process involves cutting out the growth and stitching the skin back together. The aim is to eliminate discomfort and prevent potential health issues.

17 services15 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.

17 services16 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.

16 services12 patients

Acne surgery 10040

Acne surgery is a procedure to clear up severe acne that doesn't respond to other treatments. It involves a dermatologist using specialized tools to remove blackheads, whiteheads, and pimples. This helps to reduce the appearance of acne and prevent future breakouts.

15 services14 patients

Punch biopsy, each additional skin growth 11105

A punch biopsy is a procedure where a small, circular tool removes a sample of your skin growth. This allows for testing to identify the nature of the growth. If there are multiple growths, each additional one may also need a biopsy.

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.

Morristown Medical Center

Acute Care Hospitals · Morristown, NJ

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310015

Location100 Madison AveMorristown, NJ 07960 · Morris County

Emergency services Birthing friendly

Overlook Medical Center

Acute Care Hospitals · Summit, NJ

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number310051

Location99 Beauvoir AvenueSummit, NJ 07901 · Union County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 07901 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

$98.09 typical visit price

range $63.84 – $190.92

Typical copayment $24.52 (range $15.96 – $47.73)

Most-billed visit code 99203

Established Patient

$79.09 typical visit price

range $20.97 – $155.92

Typical copayment $19.77 (range $5.24 – $38.98)

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.

75/100

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

Scored as part of a group practice

Other Providers at the Same Location NPPES

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

SKIN CARE AND SURGERY CENTER LLC

Clinic/Center (Medical Specialty)

33 OVERLOOK RD STE 202
SUMMIT, NJ 07901

Union County (908) 598-1300

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 John Williams's NPI number?

The NPI number for John Williams is 1457389678. It was assigned to this individual provider in the NPPES registry on June 28, 2006.

Where is John Williams located?

John Williams practices at 33 Overlook Rd Ste 202, Summit, NJ 07901. The listed phone number is (908) 598-1300.

What is John Williams's specialty?

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

Is John Williams enrolled in Medicare?

Yes. John Williams 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 John Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Williams reassigns Medicare benefits to Skin Care And Surgery Center LLC (Summit, NJ). 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 John Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is John Williams affiliated with any hospitals?

According to CMS data, John Williams is affiliated with Morristown Medical Center and Overlook Medical Center.

When was this NPI record last updated?

The NPPES record for John Williams was last updated on January 2, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.