Doctor profile · Federal record
Dr. Ryan Massay, MD
Rheumatology Physician (CMS: Rheumatology) · Rheumatology Physician · Ann Arbor, MI
- NPI 1710326384
- Accepts Medicare
- 9 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1500 E Medical Center Dr
Ann Arbor, MI 481095000
(734) 936-4000 - Additional location
-
6160 S Yale Ave
Tulsa, OK 741361930
(918) 495-2685
fax (918) 495-2660 - Mailing address
-
3621 S State St
Ann Arbor, MI 481081633
Credentials & registration
- NPI registered
- June 2013 — 13 yrs on file
- Profile last updated
- September 13, 2022
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State licenses (2)
- Michigan #4301506785 · Oklahoma #34208
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1710326384. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
221
Distinct HCPCS
8
Medicare allowed
$21,484
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 79 | 52 | $95 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 46 | 32 | $101 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 19 | 19 | $128 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 19 | 17 | $68 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 16 | 11 | $52 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 15 | 15 | $139 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 14 | 12 | $68 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 13 | 13 | $136 |
In context: peer comparison
Among 19 peers in this city , average services per provider: 94. This provider delivers 2.4× the peer median.Open Payments
Industry payments received
All-time total
$32
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| PFIZER INC. | 1 | $32.25 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
546
Patients
178
Total drug cost
$724,052
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 138 | 65 | $1,649 |
| Hydroxychloroquine Sulfate | Generic | 122 | 52 | $8,101 |
| Methotrexate (Methotrexate Sodium) | Brand | 78 | 36 | $3,358 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 31 | 12 | $560 |
| Mycophenolate Mofetil | Generic | 25 | 0 | $9,016 |
| Leflunomide | Generic | 21 | 13 | $1,961 |
| Gammaplex (Immun Glob G(Igg)/Gly/Iga 0-50) | Brand | 19 | 0 | $255,902 |
| Actemra Actpen (Tocilizumab) | Brand | 17 | 0 | $71,098 |
| Enbrel Sureclick (Etanercept) | Brand | 17 | 0 | $126,300 |
| Rinvoq (Upadacitinib) | Brand | 16 | 0 | $104,342 |
Hospital affiliations
Frequently asked questions
What is Dr. Ryan Massay's medical specialty?
Dr. Ryan Massay practices Rheumatology Physician in Ann Arbor, MI.
Where does Dr. Ryan Massay practice?
Dr. Ryan Massay practices at 1500 E Medical Center Dr, Ann Arbor, MI 481095000. Office phone: 7349364000.
What is Dr. Ryan Massay's NPI?
Dr. Ryan Massay's National Provider Identifier (NPI) is 1710326384, issued by NPPES.
Does Dr. Ryan Massay accept Medicare assignment?
Yes. Dr. Ryan Massay accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ryan Massay commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99214); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.