Alexander Charles Greff , PA-C
Physician Assistant โข Shiloh, IL
325 Tamarack Ln
Shiloh, IL 622692993
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Alexander Greff is listed in NPPES under Physician Assistant.
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NPI assigned on April 10, 2020; this date does not establish years in practice.
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Published CMS data list 262 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 150 service units.
- 95117 โ Professional service for multiple injections of allergen: 64 service units.
- 94375 โ Test to measure rate of airflow: 23 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 351 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Montelukast Sodium โ 65 prescription fills, including refills.
- Azelastine Hcl โ 41 prescription fills, including refills.
- Ipratropium Bromide โ 41 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 13 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: 212. Middle half: 76 to 548.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 44 in 2021 to 262 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2021โ2024.
Practice Location & Contact Primary Location
325 Tamarack Ln
Shiloh, IL 622692993
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: American Multispecialty Group Inc. 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
2020
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
91 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $20,643 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.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
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 โ by Provider and Service, 2024.
Paid by Medicare
About $14,621 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
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 โ by Provider and Service, 2024.
30-day fills
532 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
$262,404 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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 โ by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $984.19 across 46 records.
By nature of payment
- Food and Beverage: $984.19 across 46 records.
Reporting-company totals (3 largest of 14)
- Takeda Pharmaceuticals U.S.A., Inc.: $237.73 across 15 records.
- AstraZeneca Pharmaceuticals LP: $136.22 across 6 records.
- Novartis Pharmaceuticals Corporation: $106.42 across 1 record.
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.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
6 years (graduated 2020)
CMS Doctors and Clinicians data list 2020 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished 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
2020
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.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, โDoes your provider accept Medicare as full payment?โ
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.
Enrolled in Medicare (PECOS)
Alexander Greff 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.
Can order Medicare-covered services
CMS lists Alexander Greff 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Shiloh and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: 212. Middle half: 76 to 548.
Too few clinicians listed under Physician Assistant in Shiloh have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: $16,580. Middle half: $6,650 to $35,717.
Too few clinicians listed under Physician Assistant in Shiloh have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,422 clinicians with data). Median for this group: $12,415. Middle half: $4,894 to $26,472.
Too few clinicians listed under Physician Assistant in Shiloh have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 60% of clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: 203. Middle half: 67 to 595.
Too few clinicians listed under Physician Assistant in Shiloh have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 90% of clinicians listed under Physician Assistant in Illinois (2024, 2,668 clinicians with data). Median for this group: $3,018. Middle half: $535 to $48,132.
Too few clinicians listed under Physician Assistant in Shiloh have Medicare Part D data for 2024 to compare.
6 active clinicians are listed under Physician Assistant with a practice address in Shiloh, IL (4,929 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 495% from 44 in 2021 to 262 in 2024.
- 2021: 44
- 2022: 1,523
- 2023: 1,842
- 2024: 262
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Medicare-allowed amount
Medicare-allowed amount increased 603% from $2,935 in 2021 to $20,643 in 2024.
- 2021: $2,935
- 2022: $18,396
- 2023: $27,923
- 2024: $20,643
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Paid by Medicare
Paid by Medicare increased 523% from $2,348 in 2021 to $14,621 in 2024.
- 2021: $2,348
- 2022: $13,780
- 2023: $20,584
- 2024: $14,621
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 121% from 159 in 2022 to 351 in 2024.
- 2022: 159
- 2023: 355
- 2024: 351
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30-day fills
30-day fills increased 141% from 221 in 2022 to 532 in 2024.
- 2022: 221
- 2023: 532
- 2024: 532
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Part D drug cost
Part D drug cost decreased 14% from $306,406 in 2022 to $262,404 in 2024.
- 2022: $306,406
- 2023: $397,896
- 2024: $262,404
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $581.04 in 2021 to $984.19 in 2025.
- 2021: $581.04
- 2022: $820.96
- 2023: $708.56
- 2024: $942.82
- 2025: $984.19
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 ยท 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
Program year 2025 (payments made January 1 โ December 31, 2025): 46 records totaling $984.19.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
Rhapsido | General | $106.42 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $40.32 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $38.34 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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CUVITRU | General | $32.20 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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CUVITRU | General | $32.05 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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CUVITRU | General | $25.94 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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TEZSPIRE | General | $25.44 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $25.18 |
| CSL Behring |
Food and Beverage
In-kind items and services
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Andembry | General | $25.00 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $24.71 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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TRELEGY ELLIPTA | General | $23.56 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
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NEFFY | General | $23.00 |
| Octapharma USA, Inc. |
Food and Beverage
In-kind items and services
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OCTAGAM IMMUNE GLOBULIN (HUMAN) | General | $22.86 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
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NEFFY | General | $22.54 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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DUPIXENT | General | $22.20 |
| Genentech, Inc. |
Food and Beverage
In-kind items and services
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Xolair | General | $22.02 |
| Optinose US, Inc. |
Food and Beverage
In-kind items and services
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Xhance | General | $21.88 |
| CSL Behring |
Food and Beverage
In-kind items and services
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Haegarda | General | $21.51 |
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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BREZTRI | General | $21.25 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
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NUCALA | General | $21.16 |
| Cycle Pharmaceuticals Inc |
Food and Beverage
Cash or cash equivalent
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Sajazir | General | $21.08 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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CUVITRU | General | $19.87 |
| CSL Behring |
Food and Beverage
In-kind items and services
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Hizentra | General | $19.15 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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HYQVIA | General | $18.68 |
| CSL Behring |
Food and Beverage
In-kind items and services
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Hizentra | General | $18.63 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2020โ2023 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 โ by Provider and Service data, 2021โ2024; 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 |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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150 | 80 | $200.00 | $110.41 |
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95117
Professional service for multiple injections of allergen
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64 | 37 | $40.00 | $10.09 |
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94375
Test to measure rate of airflow
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23 | 19 | $169.35 | $32.46 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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14 | 11 | $125.00 | $78.04 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
|
11 | 11 | $280.00 | $145.12 |
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.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Montelukast Sodium | Montelukast Sodium | 65 | 4,630 | $569.70 | 21 |
| Azelastine Hcl | Azelastine Hcl | 41 | 1,929 | $1,166.19 | 21 |
| Ipratropium Bromide | Ipratropium Bromide | 41 | 1,184 | $674.33 | 18 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 38 | 1,129 | $904.12 | โ |
| Fluticasone Propionate | Fluticasone Propionate | 28 | 1,424 | $429.35 | 14 |
| Epinephrine | Epinephrine | 25 | 604 | $4,605.43 | 21 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 24 | 1,200 | $24,709.06 | โ |
| Famotidine | Famotidine | 17 | 690 | $124.68 | โ |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 17 | 750 | $2,315.54 | โ |
| Arnuity Ellipta | Fluticasone Furoate | 14 | 420 | $3,910.82 | โ |
| Cuvitru | Immun Glob G(Igg)/Gly/Iga Ov50 | 14 | 371 | $161,455.16 | โ |
| Dupixent Syringe | Dupilumab | 14 | 392 | $61,476.78 | โ |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 13 | 390 | $63.05 | โ |
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
Self-certified to NPPES: 2022-02-16NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20250422001992
MO
4981010162
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
American Multispecialty Group Inc
1475 Kisker Rd, Saint Charles, MO 633048791
Phone: 6369395000
American Multispecialty Group Inc
3555 Sunset Office Dr, Saint Louis, MO 631271045
Phone: 3145435200
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
DNPFNPC
Allergy & Immunology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 325 TAMARACK LN, SHILOH, IL 622692993 (Tel: 6186242060)
Registered at 325 TAMARACK LN, SHILOH, IL 622692993 (Tel: 6186242060)
Recorded as ALEXANDER GREFF, PA-C
Physician Assistant (license number reported to NPPES: IL 085.008210)
NPI status registered as active in NPPES database
Registered at 6416 OAKLAND AVE APT 306, SAINT LOUIS, MO 631393226 (Tel: 2173815718)
Registered at 6416 OAKLAND AVE APT 306, SAINT LOUIS, MO 631393226 (Tel: 2173815718)
Recorded as ALEXANDER GREFF, PA-S
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Shiloh
Healthcare providers in ShilohMailing Address
325 Tamarack Ln
Shiloh, IL 622692993
Phone: 6186242060