JOHN E FASSLER MD
NPI 1891798757
Internal Medicine - Nephrology in Rock Hill, SC

Q: What is John Fassler's NPI number?

The NPI number for John Fassler is 1891798757. It was assigned to this individual provider in the NPPES registry on May 24, 2005.

Q: What is John Fassler's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for John Fassler was last updated on February 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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 May 24, 2005PECOS EnrolledAccepts Medicare Assignment

1436 RIVERCHASE BLVD, ROCK HILL, SC 29732(803) 329-2636(803) 329-2184 Get Directions Write a Review

NPPES record last updated: February 5, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 5, 2026, May 18, 2023 (2 updates tracked since 2023).

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About John E Fassler Md NPPES

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

JOHN E FASSLER MD (NPI 1891798757) is an individual nephrology provider in Rock Hill, South Carolina, licensed in South Carolina (19767) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS, is affiliated with Piedmont Medical Center, and maintains a secondary practice location in Lancaster.

NPPES Registry Identity

NPI1891798757

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameJOHN E FASSLERCredential: MD

Location Address1436 RIVERCHASE BLVDRock Hill, SC 29732-1777

Mailing Address1436 Riverchase BlvdRock Hill, SC 29732-1777 · (803) 329-2636 · Fax (803) 329-2184

Phone(803) 329-2636

Fax(803) 329-2184

Sole ProprietorNo

Medical School CMSOhio State University College Of MedicineGraduated 1991

Enumeration DateMay 24, 2005

Last NPPES UpdateFebruary 5, 20262 updates tracked since enumeration

NPPES CertifiedFebruary 5, 2026

✔ NPI 1891798757 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in SC · 19767

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

1436 RIVERCHASE BLVD, Rock Hill, SC 29732

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Secondary Practice Location 1

Location 1322 S Main StLancaster, SC 29720-2437 · Phone (803) 329-2636

Other Identifiers 1

MedicaidT38527SC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John E Fassler 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 ID3870693930

PECOS Enrollment IDI20100215000394, I20120604000040

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 13

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 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.

540 services354 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

197 services34 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.

147 services141 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.

143 services61 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.

73 services73 patients

Manual urinalysis test with examination using microscope, non-automated 81000

A manual urinalysis test involves studying a urine sample under a microscope. This non-automated method helps identify any abnormal substances present. It's a useful tool for detecting potential health concerns early. The process is simple and non-invasive.

55 services54 patients

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.

43 services26 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.

37 services37 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

21 services21 patients

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

20 services12 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.

18 services11 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.

15 services12 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.

11 services11 patients

Hospital Affiliations CMS Care Compare

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

Piedmont Medical Center

Acute Care Hospitals · Rock Hill, SC

2/5 CMS rating

OwnershipProprietary

CMS Certification Number420002

Location1731 Frank Gaston BlvdRock Hill, SC 29732 · York County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 29732 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

$124.04 typical visit price

range $53.57 – $163.84

Typical copayment $31.01 (range $13.39 – $40.96)

Most-billed visit code 99204

Established Patient

$95.12 typical visit price

range $16.96 – $133.52

Typical copayment $23.78 (range $4.24 – $33.38)

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.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

6 suppliers53 claims3,600 services$0.30 avg. paid by Medicare

Mycophenolate mofetil, oral, 250 mg J7517

Treatment-Treatment - Miscellaneous · category RX029N

4 suppliers34 claims3,540 services$0.17 avg. paid by Medicare

Mycophenolic acid, oral, 180 mg J7518

Treatment-Treatment - Miscellaneous · category RX029N

3 suppliers20 claims2,790 services$0.96 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

4 suppliers39 claims39 services$17.36 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

6 suppliers63 claims80 services$11.85 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 16

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

THERESA NACEY PA

Physician Assistant

1436 RIVERCHASE BLVD
ROCK HILL, SC 29732

York County (803) 329-2636

DR. CRAIG IMRE HERRFORTH MD

Internal Medicine (Nephrology)

1436 RIVERCHASE BLVD
ROCK HILL, SC 29732

York County (803) 329-2636

RAMESH BHOOTHAPURI MD

Internal Medicine (Nephrology)

1436 RIVERCHASE BLVD
ROCK HILL, SC 29732

York County (803) 329-2636

MS. LINDA S SHENTON ACNP

Nurse Practitioner (Acute Care)

1436 RIVERCHASE BLVD
ROCK HILL, SC 29732

York County (803) 329-2636

ERIC W PETERSON MD

Internal Medicine (Nephrology)

1436 RIVERCHASE BLVD
ROCK HILL, SC 29732

York County (803) 329-2636

SATYA SAI V. BHUPATHI M.D.

Internal Medicine (Nephrology)

1436 RIVERCHASE BLVD
ROCK HILL, SC 29732

York County (803) 329-2636

MARY MARGARET LIAGHAT FNP

Nurse Practitioner (Family)

1436 RIVERCHASE BLVD, NEPHROLOGY ASSOCIATES PA
ROCK HILL, SC 29732

York County (803) 329-2636

STACI L VERSEN-RAMPEY APRN

Nurse Practitioner

1436 RIVERCHASE BLVD
ROCK HILL, SC 29732

York County (803) 329-2636

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 Fassler's NPI number?

The NPI number for John Fassler is 1891798757. It was assigned to this individual provider in the NPPES registry on May 24, 2005.

Where is John Fassler located?

John Fassler practices at 1436 Riverchase Blvd, Rock Hill, SC 29732. The listed phone number is (803) 329-2636.

What is John Fassler's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is John Fassler enrolled in Medicare?

Yes. John Fassler 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.

What insurance does John Fassler accept?

Health plans from Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina, First Choice Next and InStil Health and 2 other insurers list John Fassler 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 John Fassler affiliated with any hospitals?

According to CMS data, John Fassler is affiliated with Piedmont Medical Center.

When was this NPI record last updated?

The NPPES record for John Fassler was last updated on February 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.