Doctor profile · Federal record
Dr. Margaret Isaac, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Hospice and Palliative Medicine (Internal Medicine) Physician · Seattle, WA
- NPI 1255363727
- Accepts Medicare
- MIPS 87.0 / 100 · 2023
- 23 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
325 9Th Ave
Seattle, WA 98104
(206) 744-5865 - Mailing address
-
Po Box 50095
Seattle, WA 981455095
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- June 1, 2018
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Washington #MD00048241
- Medicaid
- WA #1255363727
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1255363727. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
168
Distinct HCPCS
3
Medicare allowed
$14,725
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 69 | 37 | $104 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 60 | 50 | $71 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 39 | 13 | $85 |
In context: peer comparison
Among 174 peers in Seattle Internal Medicine Physician, average services per provider: 77. This provider delivers 2.2× the peer median.Open Payments
Industry payments received
All-time total
$19
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Sumitomo Pharma America, INC. | 1 | $18.61 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
749
Patients
157
Total drug cost
$55,440
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 83 | 21 | $1,320 |
| Amlodipine Besylate | Generic | 78 | 20 | $735 |
| Lisinopril | Generic | 62 | 15 | $457 |
| Gabapentin | Generic | 60 | 12 | $1,174 |
| Oxycodone Hcl | Generic | 59 | 15 | $758 |
| Omeprazole | Generic | 58 | 12 | $1,221 |
| Losartan Potassium | Generic | 55 | 12 | $910 |
| Metoprolol Succinate | Generic | 50 | 11 | $965 |
| Fluticasone Propionate | Generic | 49 | 16 | $917 |
| Spironolactone | Generic | 36 | 11 | $544 |
Hospital affiliations
Frequently asked questions
What is Dr. Margaret Isaac's medical specialty?
Dr. Margaret Isaac practices Internal Medicine Physician in Seattle, WA.
Where does Dr. Margaret Isaac practice?
Dr. Margaret Isaac practices at 325 9Th Ave, Seattle, WA 98104. Office phone: 2067445865.
What is Dr. Margaret Isaac's NPI?
Dr. Margaret Isaac's National Provider Identifier (NPI) is 1255363727, issued by NPPES.
Does Dr. Margaret Isaac accept Medicare assignment?
Yes. Dr. Margaret Isaac accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Margaret Isaac 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 99213); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.