LOUIS CHANG MD
NPI 1235265364
Neurological Surgery in Bethesda, MD

Q: What is Louis Chang's NPI number?

The NPI number for Louis Chang is 1235265364. It was assigned to this individual provider in the NPPES registry on February 25, 2007.

Q: What is Louis Chang's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Q: When was this NPI record last updated?

The NPPES record for Louis Chang was last updated on June 8, 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 February 25, 2007PECOS Enrolled

74.39/100

CMS Quality Rating

10215 FERNWOOD RD, BETHESDA, MD 20817(301) 897-8850 Get Directions Write a Review

NPPES record last updated: June 8, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 8, 2022, Feb 10, 2020, Feb 6, 2020 (3 updates tracked since 2020).

On this page

About Louis Chang Md NPPES

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

LOUIS CHANG MD (NPI 1235265364) is an individual neurological surgery provider in Bethesda, Maryland, licensed in Maryland (D74936) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and maintains a secondary practice location in Brooklyn.

NPPES Registry Identity

NPI1235265364

Entity TypeIndividualMale

Primary Taxonomy207T00000X

Provider Legal NameLOUIS CHANGCredential: MD

Location Address10215 FERNWOOD RDBethesda, MD 20817-1106

Mailing Address6201 Greenleigh AveMiddle River, MD 21220-2004 · (410) 933-6423

Phone(301) 897-8850

Sole ProprietorNo

Medical School CMSState University Of New York Downstate Medical CenterGraduated 2004

Enumeration DateFebruary 25, 2007

Last NPPES UpdateJune 8, 20223 updates tracked since enumeration

NPPES CertifiedJune 8, 2022

✔ NPI 1235265364 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207T00000X

Licenses✔ Licensed in MD · D74936✔ Licensed in NY · 301195

Definition

A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

10215 FERNWOOD RD, Bethesda, MD 20817

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Secondary Practice Location 1

Location 1506 6th StBrooklyn, NY 11215-3609 · Phone (718) 780-3209

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Louis Chang Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID9830361476

PECOS Enrollment IDI20130308000144, I20220616002138

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 14

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.

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.

116 services116 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

95 services57 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.

79 services66 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

77 services76 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.

74 services62 patients

Emergency department visit for problem that may not require health care professional 99281

An Emergency Department visit for a mild problem involves seeking immediate medical attention for non-life-threatening conditions. These can include minor injuries, fevers, or persistent discomfort. Medical professionals will assess your condition, provide treatment, and may suggest follow-up care.

46 services46 patients

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

36 services36 patients

Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

28 services27 patients

Insertion of cage or mesh device to spine bone and disc space during spine fusion 22853

Spine fusion is a procedure to join two or more vertebrae. During this process, a cage or mesh device is inserted into the spine bone and disc space. This helps to stabilize the spine, reduce pain, and improve functionality. The device acts as a bridge for new bone to grow on.

17 services14 patients

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

17 services17 patients

Computer-assisted spinal procedure 61783

A computer-assisted spinal procedure is a surgical technique that uses computer technology for improved precision. It involves creating a 3D image of your spine to guide the surgeon during the operation. This method enhances accuracy, reduces risk, and promotes quicker recovery.

16 services16 patients

Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment 63047

This procedure involves removing part of a spine bone to alleviate pressure on the lower spinal cord and/or nerves. It targets a single segment of the spine, improving mobility and reducing pain. It's a common treatment for conditions like herniated discs or spinal stenosis.

14 services14 patients

Emergency department visit with straightforward medical decision making 99282

An emergency department visit for a mild to moderate issue is when you seek immediate medical attention for a non-life-threatening condition. This could include minor injuries, moderate pain, or illnesses like the flu. During the visit, healthcare professionals assess your condition, provide treatment, and may recommend follow-up care.

14 services14 patients

Placement of stabilizing device to back, 3-6 spine bone segments 22842

This procedure involves placing a device on your back to stabilize 3-6 spine bone segments. It aids in maintaining spine alignment and reducing pain. The device is secured to the bones, providing support and promoting healing.

13 services13 patients

Hospital Affiliations CMS Care Compare 4

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

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210009

Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County

Emergency services Birthing friendly

Suburban Hospital

Acute Care Hospitals · Bethesda, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210022

Location8600 Old Georgetown RoadBethesda, MD 20814 · Montgomery County

Emergency services

Johns Hopkins Bayview Medical Center

Acute Care Hospitals · Baltimore, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210029

Location4940 Eastern AvenueBaltimore, MD 21224 · Baltimore City County

Emergency services Birthing friendly

Holy Cross Germantown Hospital

Acute Care Hospitals · Germantown, MD

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210065

Location19801 Observation DriveGermantown, MD 20876 · Montgomery County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20817 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

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$80.66 typical visit price

range $21.40 – $158.88

Typical copayment $20.16 (range $5.35 – $39.72)

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.

74.39/100

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

Scored as part of a group practice

Quality

64.71

Promoting Interoperability

Improvement Activities

Cost

52.43

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.

JACQUELINE PATRICIA APGAR MD

Obstetrics & Gynecology

10215 FERNWOOD RD, 101
BETHESDA, MD 20817

Montgomery County (301) 530-2235

MRS. MARY SADAYA-GUILLERMO P.T.

Physical Therapist

10215 FERNWOOD RD, #506
BETHESDA, MD 20817

Montgomery County (301) 530-1010

RICHARD S MARGOLIS MD

Obstetrics & Gynecology

10215 FERNWOOD RD, SUITE 101
BETHESDA, MD 20817

Montgomery County (301) 530-2235

DR. SRIDHAR DURBHAKULA M.D.

Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)

10215 FERNWOOD RD, SUITE 506
BETHESDA, MD 20817

Montgomery County (301) 530-1010

IVELISSE CUEVAS DDS

Dentist

10215 FERNWOOD RD, #415
BETHESDA, MD 20817

Montgomery County (301) 493-4204

DR. MAHIDHAR DURBHAKULA M.D.

Orthopaedic Surgery (Hand Surgery)

10215 FERNWOOD RD, SUITE 506
BETHESDA, MD 20817

Montgomery County (301) 530-1010

DR. GEORGE BOLEN M.D.

Internal Medicine (Gastroenterology)

10215 FERNWOOD RD, SUITE 404
BETHESDA, MD 20817

Montgomery County (301) 493-5210

EVA RAND RD

Dietitian, Registered

10215 FERNWOOD RD, SUITE 100
BETHESDA, MD 20817

Montgomery County (301) 547-0569

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 Louis Chang's NPI number?

The NPI number for Louis Chang is 1235265364. It was assigned to this individual provider in the NPPES registry on February 25, 2007.

Where is Louis Chang located?

Louis Chang practices at 10215 Fernwood Rd, Bethesda, MD 20817. The listed phone number is (301) 897-8850.

What is Louis Chang's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Is Louis Chang enrolled in Medicare?

Yes. Louis Chang is registered in the Medicare PECOS enrollment system.

Is Louis Chang affiliated with any hospitals?

According to CMS data, Louis Chang is affiliated with Johns Hopkins Hospital, The, Suburban Hospital, Johns Hopkins Bayview Medical Center and Holy Cross Germantown Hospital.

When was this NPI record last updated?

The NPPES record for Louis Chang was last updated on June 8, 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.