JAMES GUOLIN WU
NPI 1851711345
Dermatology in Long Beach, CA

Q: What is James Wu's NPI number?

The NPI number for James Wu is 1851711345. It was assigned to this individual provider in the NPPES registry on April 23, 2014.

Q: What is James Wu'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 James Wu was last updated on May 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 April 23, 2014PECOS EnrolledAccepts Medicare Assignment

71.92/100

CMS Quality Rating

1045 ATLANTIC AVE STE 819, LONG BEACH, CA 90813(562) 435-5621(562) 437-3121 Get Directions Write a Review

NPPES record last updated: May 11, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 11, 2023, Nov 28, 2018 (2 updates tracked since 2018).

On this page

About James Guolin Wu NPPES

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

JAMES GUOLIN WU (NPI 1851711345) is an individual dermatology provider in Long Beach, California, licensed in California (A154528) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, maintains a secondary practice location in Hawthorne, and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (2014).

NPPES Registry Identity

NPI1851711345

Entity TypeIndividualMale

Primary Taxonomy207N00000X

Provider Legal NameJAMES GUOLIN WU

Location Address1045 ATLANTIC AVE STE 819Long Beach, CA 90813

Mailing Address14650 Aviation Blvd Ste 235Hawthorne, CA 90250-6666 · (310) 643-9333 · Fax (310) 643-9337

Phone(562) 435-5621

Fax(562) 437-3121

Sole ProprietorNo

Medical School CMSR Franklin University Of Med & Sci/chicago Medical SchoolGraduated 2014

Enumeration DateApril 23, 2014

Last NPPES UpdateMay 11, 20232 updates tracked since enumeration

NPPES CertifiedMay 11, 2023

✔ NPI 1851711345 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians

Taxonomy Code207N00000X

License✔ Licensed in CA · A154528

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.

1045 ATLANTIC AVE STE 819, Long Beach, CA 90813

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Secondary Practice Location 1

Location 114650 Aviation Blvd Ste 235Hawthorne, CA 90250-6666 · Phone (310) 643-9333 · Fax (310) 643-9337

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

James Guolin Wu 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 ID2860742582

PECOS Enrollment IDI20180830000684

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 Reassignments

Medicare enrollment records show James Wu reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Wu Enterprise Inc.

Same address

Procedural Dermatology

1045 ATLANTIC AVE STE 819
Long Beach, CA 90813

Reassigned Medicare billing, California enrollment
5 clinicians in this Medicare group

NPI 1881352581 (562) 435-5621

James Wu MD Inc

14 mi

Dermatology

14650 AVIATION BLVD
Hawthorne, CA 90250

Reassigned Medicare billing, California enrollment
2 clinicians in this Medicare group

NPI 1134785785 (310) 643-9333

W Dermatology West Covina Inc.

24 mi

Dermatology

933 S SUNSET AVE STE 301
West Covina, CA 91790

Reassigned Medicare billing, California enrollment
3 clinicians in this Medicare group

NPI 1053282103 (626) 960-5464

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 50

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.

3,571 services373 patients

Superficial and/or low voltage radiation treatment delivery 77401

Superficial and/or low voltage radiation treatment delivery is a non-invasive procedure used to treat certain diseases like skin cancer. It uses low energy radiation to target and destroy abnormal cells, aiding in halting disease progression.

2,535 services125 patients

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

1,782 services653 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.

1,513 services771 patients

Obtaining data needed to develop the optimal radiation treatment, 1 treatment area 77280

This procedure involves gathering essential information to create the best radiation treatment plan for a specific area. It includes scanning the treatment area and using this data to calculate the precise dose of radiation needed to target the disease effectively, while sparing healthy tissue.

1,404 services127 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.

843 services558 patients

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.

656 services131 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.

650 services489 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.

470 services381 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.

418 services314 patients

Radiation treatment management, 5 treatment sessions 77427

Radiation treatment management involves a series of 5 sessions where targeted radiation is used to destroy or shrink cancer cells in your body. Each session is carefully planned to maximize effectiveness while minimizing harm to healthy tissues. You may experience side effects which will be closely monitored and managed for your comfort.

412 services122 patients

Destruction of birthmark, more than 50.0 sq cm 17108

This procedure involves the removal of a large birthmark, over 50.0 sq cm in size. Techniques may include laser therapy, surgical excision, or other methods. The goal is to improve appearance and prevent potential health issues.

310 services129 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.

298 services179 patients

Ultrasonic guidance for placement of radiation therapy fields G6001

Ultrasonic guidance for radiation therapy fields involves using sound waves to create images of the treatment area. This helps to precisely locate the area needing radiation therapy, ensuring the treatment is directed accurately, minimizing harm to healthy tissues.

292 services23 patients

Aminolevulinic acid hcl for topical administration, 20%, single unit dosage form (354 mg) J7308

Aminolevulinic Acid HCL is a medication applied to the skin to treat certain types of skin conditions. It works by making the skin more sensitive to light, which helps to kill abnormal skin cells. The 20% solution is a single dose of 354 mg.

274 services129 patients

Application of light with debridement to destroy precancer skin growth 96574

This procedure involves applying a special light source to the skin after removing dead tissue (debridement). The light helps destroy precancerous growths, preventing them from developing into skin cancer. It's a safe and effective method to keep your skin healthy.

220 services123 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.

218 services163 patients

Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved 77290

This procedure involves collecting necessary data to plan the best radiation treatment. It may cover 3 or more areas or any area requiring special attention. Data collection includes imaging scans and tests to understand the disease's extent and to tailor a precise, effective treatment plan.

214 services124 patients

Calculation of radiation therapy dose 77300

Radiation therapy dose calculation is a process to determine the exact amount of radiation needed to treat a specific area in the body. This calculation helps ensure the treatment is effective while minimizing harm to healthy tissues. It's a key part of planning your radiation therapy.

209 services123 patients

Simple radiation therapy planning 77261

Simple radiation therapy planning is a process to determine the exact area on your body where the radiation will be directed. It involves imaging studies like CT scans to precisely target the disease, minimizing harm to healthy tissue. It's a crucial step in your treatment journey.

205 services123 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.

189 services164 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.

166 services144 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.

160 services128 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.

104 services97 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.

95 services95 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 services70 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks 17312

This procedure involves the careful removal of abnormal growths from the head, neck, hands, or feet. The removed tissues, divided into 1-5 blocks, are then examined under a microscope to identify any irregularities. The process may be carried out in multiple stages for thorough examination.

76 services46 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.

73 services47 patients

Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks 17311

This procedure involves the careful removal of a growth from the head, neck, hands, or feet. The removed tissue, divided into 1-5 blocks, is then examined under a microscope to study its characteristics and determine the nature of the growth.

62 services47 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.

58 services46 patients

Complicated repair of wound of trunk, 2.6-7.5 cm 13101

This service involves the intricate repair of a wound on your body's main structure, between your neck and limbs. The wound measures 2.6-7.5 cm. The procedure includes deep-layer stitching and may involve repairing damaged tissue.

50 services38 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.

47 services40 patients

Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm 13132

This procedure involves the complex repair of a wound in areas like the forehead, cheeks, chin, mouth, neck, underarms, hands, or feet. The wound size ranges from 2.6-7.5 cm. The process includes cleaning, removing damaged tissue, and stitching the wound for proper healing.

46 services38 patients

Application of light by qualified health care professional to destroy precancer skin growth 96573

This procedure involves a healthcare professional using a special light to target and destroy precancerous skin growths. It's a non-invasive method aimed at preventing the development of skin cancer. The process is safe, performed by trained professionals, and usually quick.

42 services25 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.

36 services36 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.

34 services30 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.

33 services28 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.

32 services30 patients

Biopsy of eyelid 67810

A biopsy of the eyelid is a procedure where a small piece of tissue is taken from your eyelid for examination. It helps identify any abnormal growth like a lump or cyst. It's done under local anesthesia, so you won't feel pain during the process.

30 services28 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.

21 services19 patients

Destruction of birthmark, 10.0-50.0 sq cm 17107

This procedure involves the removal of a birthmark ranging from 10.0 to 50.0 square cm. Various methods like laser therapy or surgical excision may be used. It's performed under local or general anesthesia, ensuring comfort throughout the process.

21 services13 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.

20 services17 patients

Complicated repair of wound of scalp, arms, or legs, 2.6-7.5 cm 13121

This is a procedure to repair a complex wound on your scalp, arm, or leg that is 2.6-7.5 cm long. It involves cleaning, removing damaged tissue, and stitching the wound to promote healing. It's performed under local or general anesthesia.

18 services17 patients

Removal and microscopic exam of growth of trunk, arms, or legs, 1-5 tissue blocks 17313

This procedure involves the removal of a growth from your trunk, arms, or legs. The removed tissue, divided into 1-5 blocks, is then examined under a microscope to identify any abnormalities. This helps in diagnosing and planning further treatment.

17 services17 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.

15 services13 patients

Removal and microscopic exam of growth of trunk, arms, or legs, each additional stage, 1-5 tissue blocks 17314

This procedure involves removing growths from the trunk, arms, or legs. The removed tissues, divided into 1-5 blocks, are then examined under a microscope to identify any abnormalities. This aids in diagnosing and treating your condition effectively.

15 services14 patients

Removal of noncancer skin growth of face, ears, eyelids, nose, lips, or mouth, 0.5 cm or less 11440

This procedure involves the removal of a noncancerous skin growth on the face, ears, eyelids, nose, lips, or mouth that is 0.5 cm or less in size. It is a safe, routine treatment that helps maintain skin health and appearance.

14 services12 patients

Removal of noncancer skin growth of body, arms, or legs, 0.5 cm or less 11400

This procedure involves the removal of a small, noncancerous skin growth on the body, arms, or legs. The growth, no larger than 0.5 cm, is carefully excised using medical tools. The goal is to improve skin health and appearance. It is a safe and common procedure.

13 services12 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.

12 services11 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.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90813 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

$96.36 typical visit price

range $62.96 – $187.60

Typical copayment $24.09 (range $15.74 – $46.90)

Most-billed visit code 99203

Established Patient

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

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.

71.92/100

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

Scored as part of a group practice

Quality

52.72

Improvement Activities

Cost

63.68

Other Providers at the Same Location NPPES 2

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

DOUGLAS KENT ULMER MD

Dermatology

1045 ATLANTIC AVE STE 819
LONG BEACH, CA 90813

Los Angeles County (562) 435-5621

WU ENTERPRISE INC.

Dermatology (Procedural Dermatology)

1045 ATLANTIC AVE STE 819
LONG BEACH, CA 90813

Los Angeles County (562) 435-5621

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 James Wu's NPI number?

The NPI number for James Wu is 1851711345. It was assigned to this individual provider in the NPPES registry on April 23, 2014.

Where is James Wu located?

James Wu practices at 1045 Atlantic Ave Ste 819, Long Beach, CA 90813. The listed phone number is (562) 435-5621.

What is James Wu's specialty?

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

Is James Wu enrolled in Medicare?

Yes. James Wu 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 organizations bill Medicare for James Wu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Wu reassigns Medicare benefits to 3 organizations: Wu Enterprise Inc. (Long Beach, CA), James Wu MD Inc (Hawthorne, CA) and W Dermatology West Covina Inc. (West Covina, CA). Each 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 James Wu'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 James Wu was last updated on May 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.