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NEHEMIAH T TAN M.D.
NPI 1578520995
Internal Medicine - Rheumatology in Mattoon, IL

Active since April 28, 2006PECOS EnrolledAccepts Medicare Assignment
9.07/100
CMS Quality Rating
200 RICHMOND AVE E STE 3, MATTOON, IL 61938(217) 238-7000(217) 234-2060 Get Directions Write a Review

NPPES record last updated: April 6, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 6, 2026, Dec 3, 2024, Sep 25, 2019 (3 updates tracked since 2019).

About Nehemiah T Tan M.d. NPPES

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

NEHEMIAH T TAN M.D. (NPI 1578520995) is an individual rheumatology provider in Mattoon, Illinois, licensed in Illinois (036085107) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with St Anthonys Memorial Hospital, and is a graduate of Other (1989).

NPPES Registry Identity

NPI1578520995
Entity TypeIndividualMale
Primary Taxonomy207RR0500X
Provider Legal NameNEHEMIAH T TANCredential: M.D.
Location Address200 RICHMOND AVE E STE 3Mattoon, IL 61938-4652
Mailing AddressPo Box 372Mattoon, IL 61938-0372 · (217) 258-2581 · Fax (217) 258-2216
Phone(217) 238-7000
Fax(217) 234-2060
Sole ProprietorYes
Medical School CMSOtherGraduated 1989
Enumeration DateApril 28, 2006
Last NPPES UpdateApril 6, 20263 updates tracked since enumeration
NPPES CertifiedApril 6, 2026
✔ NPI 1578520995 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in IL · 036085107
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
200 RICHMOND AVE E STE 3, Mattoon, IL 61938
Open in Google Maps ↗

Other Identifiers 1

Medicaid036085107IL

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

Nehemiah T Tan 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 ID446241228
PECOS Enrollment IDI20040520000681
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 10

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.

Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) J0129
Abatacept is a medication administered via injection under a doctor's supervision. It's used to treat conditions like rheumatoid arthritis by moderating the immune system. This code applies when the doctor administers the drug, not for self-administration.
12,775 services19 patients
Injection, infliximab, excludes biosimilar, 10 mg J1745
Infliximab is a medication given via injection to treat certain autoimmune conditions. It works by blocking the action of a substance in your body that causes inflammation. Each dose is based on your medical condition and response to treatment.
2,180 services13 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.
856 services407 patients
Injection, triamcinolone acetonide, not otherwise specified, 10 mg J3301
Triamcinolone acetonide is a medication used to reduce inflammation in the body. It's given as a 10 mg injection for conditions like allergies, arthritis, or skin problems. The injection helps to decrease swelling, redness, and itching.
470 services46 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.
302 services183 patients
Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less 96365
This is a procedure where a medical professional inserts a small tube into your vein to deliver medication, nutrients, or fluids directly into your bloodstream. This can be for treatment, prevention, or diagnosis. The process typically takes less than an hour.
217 services37 patients

Hospital Affiliations CMS Care Compare 5

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

St Anthonys Memorial Hospital

Acute Care Hospitals · Effingham, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140032
Location503 N Maple StreetEffingham, IL 62401 · Effingham County
Emergency services Birthing friendly

Decatur Memorial Hospital

Acute Care Hospitals · Decatur, IL
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140135
Location2300 North Edward StreetDecatur, IL 62526 · Macon County
Emergency services Birthing friendly

St Marys Hospital

Acute Care Hospitals · Decatur, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140166
Location1800 E Lake Shore DrDecatur, IL 62521 · Macon County
Emergency services Birthing friendly

Sarah Bush Lincoln Health Center

Acute Care Hospitals · Mattoon, IL
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140189
Location1000 Health Center Drive P O Box 372Mattoon, IL 61938 · Coles County
Emergency services Birthing friendly

Fayette County Hospital

Critical Access Hospitals · Vandalia, IL
OwnershipVoluntary non-profit - Other
CMS Certification Number141346
Location650 W Taylor StVandalia, IL 62471 · Fayette County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61938 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$97.25 typical visit price
range $17.16 – $136.56
Typical copayment $24.31 (range $4.29 – $34.14)
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.

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.

9.07/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored
Quality0
Improvement Activities0
Cost30.24

Reported Quality Measures

Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
77%3,543 patients2/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
87%4,368 patients4/55-star benchmark: 100%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
100%2,875 patients5/55-star benchmark: 96%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
66%1,465 patients2/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
90%1,414 patients4/55-star benchmark: 99%
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan
Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…
21%1,414 patients1/55-star benchmark: 97%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
0%414 patients1/55-star benchmark: 100%
Use of High-Risk Medications in the Elderly
Percentage of patients 65 years of age and older who were ordered high-risk medications. Two rates are submitted. 1) Percentage of patients who were ordered at least one high-risk medication.
Lower rates are better for this measure.
Patients 2+: 1% · 656 patients
1%656 patients4/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 3

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

DR. SATHYA SUBBIAH M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
200 RICHMOND AVE E STE 3
MATTOON, IL 61938
Coles County (217) 234-7000
HANNAH JO DUKEMAN APRN
Registered Nurse (Diabetes Educator)
200 RICHMOND AVE E STE 3
MATTOON, IL 61938
Coles County (217) 234-7000
DR. ANTONIOS PAPADOPOULOS MD
Internal Medicine (Nephrology)
200 RICHMOND AVE E STE 3
MATTOON, IL 61938
Coles County (217) 234-7000

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 Nehemiah Tan's NPI number?

The NPI number for Nehemiah Tan is 1578520995. It was assigned to this individual provider in the NPPES registry on April 28, 2006.

Where is Nehemiah Tan located?

Nehemiah Tan practices at 200 Richmond Ave E Ste 3, Mattoon, IL 61938. The listed phone number is (217) 238-7000.

What is Nehemiah Tan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Nehemiah Tan enrolled in Medicare?

Yes. Nehemiah Tan 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.

Is Nehemiah Tan affiliated with any hospitals?

According to CMS data, Nehemiah Tan is affiliated with St Anthonys Memorial Hospital, Decatur Memorial Hospital, St Marys Hospital, Sarah Bush Lincoln Health Center and Fayette County Hospital.

When was this NPI record last updated?

The NPPES record for Nehemiah Tan was last updated on April 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.