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FANG WANG M.D.
NPI 1841630647
Internal Medicine in Chesterfield, MO

Active since June 26, 2013PECOS EnrolledAccepts Medicare Assignment
222 S WOODS MILL RD, CHESTERFIELD, MO 63017(314) 205-6050(314) 434-5939 Get Directions Write a Review

NPPES record last updated: June 26, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Fang Wang M.d. NPPES

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

FANG WANG M.D. (NPI 1841630647) is an individual internal medicine provider in Chesterfield, Missouri, licensed in Missouri (2013015517) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital South, and is a graduate of Other (2001).

NPPES Registry Identity

NPI1841630647
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameFANG WANGCredential: M.D.
Location Address222 S WOODS MILL RDChesterfield, MO 63017-3625
Mailing Address222 S Woods Mill RdChesterfield, MO 63017-3625 · (314) 205-6050 · Fax (314) 434-5939
Phone(314) 205-6050
Fax(314) 434-5939
Sole ProprietorNo
Medical School CMSOtherGraduated 2001
Enumeration DateJune 26, 2013
✔ NPI 1841630647 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MO · 2013015517
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
222 S WOODS MILL RD, Chesterfield, MO 63017
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

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

Fang Wang 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 ID749582575
PECOS Enrollment IDI20160721001171
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

6

Medicare enrollment records show Fang Wang reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mercy Clinic Adult Hospitalists - St. Louis, LLC
3.3 mi
Internal Medicine
621 S NEW BALLAS RD, SUITE 3016-B
Saint Louis, MO 63141
  • Reassigned Medicare billing, Missouri enrollment
  • 326 clinicians in this Medicare group
NPI 1841235108 (314) 251-6339
Sound Physicians Of Illinois, LLC
7.7 mi
Hospitalist
12303 DE PAUL DR
Bridgeton, MO 63044
  • Reassigned Medicare billing, Missouri enrollment
  • 301 clinicians in this Medicare group
NPI 1043598865 (314) 344-6000
Ssm Health Care St. Louis
7.7 mi
Cardiovascular Disease
12303 DE PAUL DR
Bridgeton, MO 63044
  • Reassigned Medicare billing, Missouri enrollment
  • 741 clinicians in this Medicare group
NPI 1376598599 (314) 344-6000
Cogent Healthcare Of Missouri, Inc
8.7 mi
Critical Care Medicine
1015 BOWLES AVE
Fenton, MO 63026
  • Reassigned Medicare billing, Missouri enrollment
  • 255 clinicians in this Medicare group
NPI 1780961599 (615) 377-5600
St Anthonys Physician Organization Hospitalist Services, L.C.
12 mi
Hospitalist
10010 KENNERLY RD, 3 SOUTHBRIDGE
Saint Louis, MO 63128
  • Reassigned Medicare billing, Missouri enrollment
  • Medicare enrollment name: St Anthonys Physician Organization Hospitalist Services Lc
  • 340 clinicians in this Medicare group
NPI 1407216336 (314) 525-1328
Mercy Clinic Adult Hospitalists- Jefferson, LLC
32 mi
Internal Medicine
1400 US HIGHWAY 61
Festus, MO 63028
  • Reassigned Medicare billing, Missouri enrollment
  • 299 clinicians in this Medicare group
NPI 1083052492 (314) 364-4200

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
486 services210 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.
148 services77 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
147 services146 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
90 services90 patients

Hospital Affiliations CMS Care Compare 2

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

Mercy Hospital South

Acute Care Hospitals · Saint Louis, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260077
Location10010 Kennerly RoadSaint Louis, MO 63128 · St. Louis County
Emergency services

Ssm Health Depaul Hospital St Louis

Acute Care Hospitals · Bridgeton, MO
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number260104
Location12303 Depaul DriveBridgeton, MO 63044 · St. Louis County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63017 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
$128.28 typical visit price
range $55.65 – $169.38
Typical copayment $32.07 (range $13.91 – $42.34)
Most-billed visit code 99204
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

MS. KIMBERLY C GRUNZINGER MSN, RN, ACNS-BC
Clinical Nurse Specialist (Adult Health)
222 S WOODS MILL RD, SUITE 480 N
CHESTERFIELD, MO 63017
St. Louis County (314) 576-7343
RACHEL LYNN FISHMAN OIKNINE M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
222 S WOODS MILL RD, SUITE 410N
CHESTERFIELD, MO 63017
St. Louis County (314) 469-6224
MARYLAND MEDICAL GROUP LTD
Internal Medicine
222 S WOODS MILL RD, SUITE 350N
CHESTERFIELD, MO 63017
St. Louis County (314) 205-6557
MARIA THERESA WEIR
Nurse Practitioner (Adult Health)
222 S WOODS MILL RD, SUITE 410N
CHESTERFIELD, MO 63017
St. Louis County (314) 469-6224
JOHN BEST MD
Internal Medicine (Pulmonary Disease)
222 S WOODS MILL RD, SUITE 310 NORTH
CHESTERFIELD, MO 63017
St. Louis County (314) 576-6700
WEST COUNTY OPHTHALMOLOGY, INC
Ophthalmology
222 S WOODS MILL RD, SUITE 660N
CHESTERFIELD, MO 63017
St. Louis County (314) 878-9902
TARISAI SHARON NYAHODA MD
Internal Medicine (Geriatric Medicine)
222 S WOODS MILL RD
CHESTERFIELD, MO 63017
St. Louis County (314) 205-6050
DR. JERROLD J LANDER M.D.
Internal Medicine (Gastroenterology)
222 S WOODS MILL RD, SUITE 750
CHESTERFIELD, MO 63017
St. Louis County (314) 205-6600

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 Fang Wang's NPI number?

The NPI number for Fang Wang is 1841630647. It was assigned to this individual provider in the NPPES registry on June 26, 2013.

Where is Fang Wang located?

Fang Wang practices at 222 S Woods Mill Rd, Chesterfield, MO 63017. The listed phone number is (314) 205-6050.

What is Fang Wang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Fang Wang enrolled in Medicare?

Yes. Fang Wang 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 Fang Wang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Fang Wang reassigns Medicare benefits to 6 organizations: Mercy Clinic Adult Hospitalists - St. Louis, LLC (Saint Louis, MO), Sound Physicians Of Illinois, LLC (Bridgeton, MO), Ssm Health Care St. Louis (Bridgeton, MO), Cogent Healthcare Of Missouri, Inc (Fenton, MO), St Anthonys Physician Organization Hospitalist Services, L.C. (Saint Louis, MO) and 1 more organization, listed in the Medicare section above. 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 Fang Wang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Fang Wang accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 1 other insurer list Fang Wang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Fang Wang affiliated with any hospitals?

According to CMS data, Fang Wang is affiliated with Mercy Hospital South and Ssm Health Depaul Hospital St Louis.

When was this NPI record last updated?

The NPPES record for Fang Wang was last updated on June 26, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.