Doctor profile · Federal record
Dr. Ann Chamberlain, NP
Gerontology Nurse Practitioner (CMS: Nurse Practitioner) · Grand Rapids, MI
- NPI 1851984330
- Accepts Medicare
- 6 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
230 Michigan St Ne Ste 230
Grand Rapids, MI 495032550
(616) 774-2822 - Mailing address
-
100 Michigan St Ne # Mc845
Grand Rapids, MI 495032560
Credentials & registration
- NPI registered
- February 2021 — 5 yrs on file
- Profile last updated
- March 6, 2025
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 363LG0600X — NUCC code
- State license (1)
- Michigan #4704289609
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851984330. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
450
Distinct HCPCS
6
Medicare allowed
$31,042
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 180 | 48 | $60 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 118 | 37 | $40 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 67 | 21 | $102 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 40 | 12 | $98 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 26 | 15 | $140 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 19 | 12 | $65 |
In context: peer comparison
Among 33 peers in Grand Rapids Gerontology Nurse Practitioner, average services per provider: 67. This provider delivers 6.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
253
Patients
13
Total drug cost
$56,368
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ceftriaxone (Ceftriaxone Sodium) | Brand | 56 | 0 | $1,677 |
| Vancomycin Hcl | Generic | 55 | 0 | $9,376 |
| Daptomycin | Generic | 25 | 0 | $8,879 |
| Piperacillin-Tazobactam (Piperacillin Sodium/Tazobactam) | Brand | 25 | 0 | $7,513 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 18 | 13 | $224 |
| Cefepime Hcl | Generic | 17 | 0 | $4,005 |
| Ertapenem (Ertapenem Sodium) | Brand | 17 | 0 | $14,105 |
| Meropenem | Generic | 15 | 0 | $9,848 |
| Doxycycline Monohydrate | Generic | 13 | 0 | $538 |
| Metronidazole | Generic | 12 | 0 | $202 |
Hospital affiliations
Frequently asked questions
What is Dr. Ann Chamberlain's medical specialty?
Dr. Ann Chamberlain practices Gerontology Nurse Practitioner in Grand Rapids, MI.
Where does Dr. Ann Chamberlain practice?
Dr. Ann Chamberlain practices at 230 Michigan St Ne Ste 230, Grand Rapids, MI 495032550. Office phone: 6167742822.
What is Dr. Ann Chamberlain's NPI?
Dr. Ann Chamberlain's National Provider Identifier (NPI) is 1851984330, issued by NPPES.
Does Dr. Ann Chamberlain accept Medicare assignment?
Yes. Dr. Ann Chamberlain accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ann Chamberlain commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.