Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Gerri Dyer , NP

Nurse Practitioner • Herrin, IL

Active NPI 1952328486 Individual Practitioner Female Practitioner Accepts Medicare assignment
Practice location in NPPES

220 N Park Ave, Suite 2
Herrin, IL 629483150

Call 6189423344 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

220 N Park Ave
Suite 2

Herrin, IL 629483150

Telephone 6189423344
Fax 6189425045
Organization at the Same NPPES Address or Phone
Southern Illinois Dermatology, Pc Facility NPI 1306870233

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Southern Illinois Dermatology, Pc. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Saint Louis University School Of Medicine

Graduation Year

2004

Medicare patients

1,103 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $268,319 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $183,979 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

30-day fills

1,434 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$316,797 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Open Payments general payments, program year 2025

All general payments: $1,198.79 across 47 records.

By nature of payment

  • Food and Beverage: $1,098.80 across 46 records.
  • Education: $99.99 across 1 record.

Reporting-company totals (3 largest of 15)

  • Amgen Inc.: $238.49 across 15 records.
  • Incyte Corporation: $198.23 across 4 records.
  • Galderma Laboratories, L.P.: $182.17 across 5 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

22 years (graduated 2004)

CMS Doctors and Clinicians data list 2004 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2006

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Gerri Dyer has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Gerri Dyer as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Herrin and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part B services

More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Herrin, IL (2024, 21 clinicians with data). Median for this group: 304. Middle half: 99 to 775.

More Medicare Part B services than 95% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.

Medicare-allowed amount

A higher Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Herrin, IL (2024, 21 clinicians with data). Median for this group: $24,643. Middle half: $5,625 to $55,243.

A higher Medicare-allowed amount than 95% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $21,010. Middle half: $8,652 to $42,014.

Paid by Medicare

A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Herrin, IL (2024, 21 clinicians with data). Median for this group: $19,034. Middle half: $4,481 to $41,630.

A higher Medicare payment amount than 95% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $15,151. Middle half: $6,396 to $31,322.

Medicare Part D prescriptions

Close to the middle for clinicians listed under Nurse Practitioner in Herrin, IL (2024, 24 clinicians with data). Median for this group: 1,290. Middle half: 163 to 2,346.

More Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: 259. Middle half: 80 to 930.

Part D drug cost

A higher Part D drug cost than 65% of clinicians listed under Nurse Practitioner in Herrin, IL (2024, 24 clinicians with data). Median for this group: $141,963. Middle half: $10,006 to $403,358.

A higher Part D drug cost than 85% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: $10,867. Middle half: $976 to $113,945.

32 active clinicians are listed under Nurse Practitioner with a practice address in Herrin, IL (4,894 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Herrin

18.8% of these 32 clinicians have the CMS telehealth indicator.

87.5% of these 32 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 47 records totaling $1,198.79.

Manufacturer Payment Nature Product Type Amount ($)
Galderma Laboratories, L.P.
Food and Beverage
In-kind items and services
NEMLUVIO General $150.00
Incyte Corporation
Food and Beverage
Cash or cash equivalent
Opzelura General $129.11
Janssen Pharmaceuticals, Inc
Education
In-kind items and services
TREMFYA General $99.99
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $33.54
Sanofi and Genzyme US Companies
Food and Beverage
In-kind items and services
DUPIXENT General $31.42
Boehringer Ingelheim Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
SPEVIGO General $31.32
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
Rhapsido General $31.15
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
COSENTYX General $28.22
Incyte Corporation
Food and Beverage
Cash or cash equivalent
OPZELURA General $27.22
UCB, Inc.
Food and Beverage
In-kind items and services
Bimzelx General $27.18
Regeneron Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
LIBTAYO General $25.67
Eli Lilly and Company
Food and Beverage
In-kind items and services
TALTZ General $25.59
Amgen Inc.
Food and Beverage
In-kind items and services
OTEZLA General $23.75
Incyte Corporation
Food and Beverage
Cash or cash equivalent
OPZELURA General $22.95
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $22.38
Amgen Inc.
Food and Beverage
In-kind items and services
OTEZLA General $21.37
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $21.05
Organogenesis Inc.
Food and Beverage
In-kind items and services
AFFINITY General $20.92
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $20.65
Amgen Inc.
Food and Beverage
In-kind items and services
OTEZLA General $20.54
Eli Lilly and Company
Food and Beverage
In-kind items and services
EBGLYSS General $19.29
Amgen Inc.
Food and Beverage
In-kind items and services
OTEZLA General $19.23
Incyte Corporation
Food and Beverage
Cash or cash equivalent
OPZELURA General $18.95
ABBVIE INC.
Food and Beverage
In-kind items and services
SKYRIZI General $18.86
STRATA Skin Sciences, Inc.
Food and Beverage
In-kind items and services
XTRAC General $18.43

(top 25 shown)

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024
Reporting Year:

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
17003 Destruction of precancer skin growth, 2-14 growths
2,166 373 $23.00 $5.17
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
903 661 $145.00 $73.36
17000 Destruction of precancer skin growth, 1 growth
745 500 $135.00 $48.29
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
408 334 $90.00 $45.54
17110 Destruction of skin growth, 1-14 growths
308 235 $190.00 $86.81
11104 Punch biopsy, first skin growth
250 216 $215.00 $96.94
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
133 133 $175.00 $91.20
11105 Punch biopsy, each additional skin growth
86 62 $105.00 $47.20
11102 Biopsy of related skin growth, first growth
85 80 $170.00 $74.16
J7308 Aminolevulinic acid hcl for topical administration, 20%, single unit dosage form (354 mg)
76 23 $500.00 $389.14
96567 Application of light to destroy precancer skin growth
68 24 $190.37 $101.50
17004 Destruction of precancer skin growth, 15 or more growths
44 38 $325.00 $133.09
11401 Removal of noncancer skin growth of body, arms, or legs, 0.6-1.0 cm
34 29 $260.00 $95.23
11103 Biopsy of related skin growth, each additional growth
26 21 $90.00 $39.72
11300 Shaving of skin growth of body, arms, or legs, 0.5 cm or less
26 19 $170.00 $60.77
99202 New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more
23 23 $115.00 $58.44
11301 Shaving of skin growth of body, arms, or legs, 0.6-1.0 cm
19 18 $205.00 $83.56
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less
19 19 $435.00 $199.83
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
16 16 $200.00 $99.59
11402 Removal of noncancer skin growth of body, arms, or legs, 1.1-2.0 cm
15 13 $285.00 $73.50
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm
14 14 $505.00 $235.07
69100 Biopsy of ear
13 12 $180.00 $64.14
11400 Removal of noncancer skin growth of body, arms, or legs, 0.5 cm or less
11 11 $210.00 $102.05

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D · Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Ketoconazole Ketoconazole 330 8,873 $5,686.64 139
Clobetasol Propionate Clobetasol Propionate 229 6,407 $10,838.11 128
Doxycycline Monohydrate Doxycycline Monohydrate 86 2,608 $1,173.31 41
Hydrocortisone Hydrocortisone 84 2,042 $499.17 65
Mupirocin Mupirocin 70 1,392 $681.53 55
Triamcinolone Acetonide Triamcinolone Acetonide 58 1,381 $695.69 43
Metronidazole Metronidazole 55 1,506 $3,958.76 28
Cephalexin Cephalexin 54 1,558 $487.35 23
Fluticasone Propionate Fluticasone Propionate 45 1,161 $861.27 29
Imiquimod Imiquimod 41 1,715 $2,391.66 27
Erythromycin Erythromycin Base In Ethanol 41 1,150 $883.77 21
Doxycycline Hyclate Doxycycline Hyclate 30 721 $216.96 14
Betamethasone Dipropionate Betamethasone Dipropionate 30 730 $1,010.37 16
Ammonium Lactate Ammonium Lactate 24 695 $297.30 17
Otezla Apremilast 24 705 $90,319.93 —
Azelaic Acid Azelaic Acid 24 643 $3,451.10 11
Ciclopirox Ciclopirox 22 660 $668.22 11
Humira(Cf) Pen Adalimumab 20 560 $181,164.24 —
Halobetasol Propionate Halobetasol Propionate 19 489 $972.52 16
Desonide Desonide 15 339 $859.22 —
Fluocinolone Acetonide Fluocinolone Acetonide 12 375 $629.50 —
Doxycycline Ir-Dr Doxycycline Monohydrate 12 360 $8,448.84 —
Clindamycin Phosphate Clindamycin Phosphate 11 340 $601.92 —

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Other Identifier Railroad Group Number
CB3700 (IL)
Other Identifier Umwa Provider Number
K07911 (IL)
Other Identifier Umwa Provider Number
K16716 (IL)
Other Identifier Railroad Provider Number
P00103464 (IL)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - NURSE PRACTITIONER

Medicare Enrollment ID

I20040810000512

Enrollment State Jurisdiction

IL

PECOS Control ID

7012989148

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Southern Illinois Dermatology, Pc

1401 Walnut St, Murphysboro, IL 629662029

Phone: 6185651212

Southern Illinois Dermatology, Pc

220 N Park Ave, Herrin, IL 629483150

Phone: 6189423344

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

6 listed
Leon Gauthier , PA-C

Physician Assistant

NPI 1033145172

Physician Assistant (Certified)

NPI 1457372724

Doctor of Medicine (M.D.)

Joshua Loyd , FNP-BC

Nurse Practitioner - Family

NPI 1598445405

Family Nurse Practitioner (Board Certified)

Natalie Spiller , PA-C

Physician Assistant

NPI 1942550272

Physician Assistant (Certified)

Shanda Swagler , FNP-C

Nurse Practitioner - Family

NPI 1750526810

Family Nurse Practitioner (Certified)

NPI 1720025562

Doctor of Osteopathic Medicine (D.O.)

Career & Practice History

NPI enumerated July 17, 2006.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.

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NPI Administrative Meta

NPI Number: 1952328486
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 17, 2006
Last Update: July 09, 2007
Sole Proprietor: No

Other Nurse Practitioners in Herrin

All Nurse Practitioners in Herrin

Mailing Address

220 N Park Ave, Suite 2

Herrin, IL 629483150

Phone: 6189423344

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.