DR. ALLAN LOUIS MARKUS (MD) – Internal Medicine Physician, NPI 1972595569
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,585 INTERNAL MEDICINE in AZ
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Provider Addresses for DR. ALLAN LOUIS MARKUS (MD)
20401, North 73rd Street, Grayhawk Medical Plaza, Scottsdale, Maricopa County, Arizona, 85255, United States
SUITE 105
SCOTTSDALE, AZ 852554107
Phone: (480) 882-7500
Fax: (480) 505-3348
Type: Location
1120 S DOBSON RD STE 225
CHANDLER, AZ 852866170
Phone: (480) 728-5460
Fax: (480) 728-5461
Type: Location
8230, East Lippizan Trail, Estados de La Mancha II, Scottsdale, Maricopa County, Arizona, 85258, United States
SCOTTSDALE, AZ 852581349
Phone: (602) 999-1280
Type: Mailing
655 S Dobson Rd Ste B113
Chandler, AZ 852245667
Phone: (480) 728-5020
Fax: (480) 899-5023
Type: Location
655 S Dobson Rd Ste B-113
Chandler, AZ 852245667
Phone: (480) 728-5460
Fax: (480) 728-5461
Type: Location
PO BOX 33269
PHOENIX, AZ 850673269
Phone: (602) 406-4786
Fax: (916) 636-4358
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2004-04-05
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20040405000344 | I | Internal Medicine | AZ | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 27 | 16 | $0 |
Insurance plans in this area (ZIP 85255)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | AZ | |
| - | IL | |
| - | AZ | |
| Infectious Disease, Internal Medicine | WA | |
| - | AZ | |
| Pulmonary Disease, Critical Care (Intensivists) | AZ | |
| Diagnostic Radiology | AZ | |
| Nurse Practitioner | AZ | |
| Nurse Practitioner | AZ | |
| Colorectal Surgery (Proctology) | AZ |
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