Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

NATALIE MEE-CHIN HSIAO-FANG-YEN MD
NPI 1740818988
Internal Medicine in Franklin, TN

Q: What is Natalie Hsiao-fang-yen's NPI number?

The NPI number for Natalie Hsiao-fang-yen is 1740818988. It was assigned to this individual provider in the NPPES registry on April 1, 2020.

Q: What is Natalie Hsiao-fang-yen's specialty?

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

Active since April 01, 2020PECOS EnrolledAccepts Medicare Assignment

4321 CAROTHERS PKWY, FRANKLIN, TN 37067(615) 435-5000 Get Directions Write a Review

NPPES record last updated: October 1, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 1, 2026, Apr 1, 2020 (2 updates tracked since 2020).

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About Natalie Mee-chin Hsiao-fang-yen Md NPPES

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

NATALIE MEE-CHIN HSIAO-FANG-YEN MD (NPI 1740818988) is an individual internal medicine provider in Franklin, Tennessee, licensed in Tennessee (67881) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS, is affiliated with Williamson Medical Center, and is a graduate of Other (2018).

NPPES Registry Identity

NPI1740818988

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameNATALIE MEE-CHIN HSIAO-FANG-YENCredential: MD

Location Address4321 CAROTHERS PKWYFranklin, TN 37067-8542

Mailing Address4321 Carothers PkwyFranklin, TN 37067-8542 · (615) 435-5000

Phone(615) 435-5000

Sole ProprietorNo

Medical School CMSOtherGraduated 2018

Enumeration DateApril 1, 2020

Last NPPES UpdateOctober 1, 20262 updates tracked since enumeration

NPPES CertifiedOctober 1, 2026

✔ NPI 1740818988 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TN · 67881

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.

4321 CAROTHERS PKWY, Franklin, TN 37067

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company.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

Natalie Mee-chin Hsiao-fang-yen 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 ID3577927987

PECOS Enrollment IDI20230918002338

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 Natalie Hsiao-fang-yen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Williamson Hospitalist Program

Same address

Hospitalist

4323 CAROTHERS PKWY STE 205
Franklin, TN 37067

Reassigned Medicare billing, Tennessee enrollment
54 clinicians in this Medicare group

NPI 1871057158 (615) 435-6700

Anova Medical Associates, Plc

37 mi

Hospitalist

1156 NASHVILLE PIKE
Gallatin, TN 37066

Reassigned Medicare billing, Tennessee enrollment
195 clinicians in this Medicare group

NPI 1659849537 (615) 989-1088

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 5

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.

205 services108 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.

162 services98 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.

98 services98 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

62 services32 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.

33 services33 patients

Hospital Affiliations CMS Care Compare

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

Williamson Medical Center

Acute Care Hospitals · Franklin, TN

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number440029

Location4321 Carothers ParkwayFranklin, TN 37067 · Williamson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37067 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

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

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.

WILLIAMSON MEDICAL CENTER EMS, LLC

Ambulance